Find all real numbers $ x$ which satisfy the following equation:
$ [2x]\plus{}[3x]\plus{}[7x]\equal{}2008$.

Note: $ [x]$ means the greatest integer less or equal than $ x$.
1. Let \( x = z + \theta \), where \( z \in \mathbb{Z} \) and \( 0 \le \theta < 1 \). Using the property of the floor function, \([z + r] = z + [r]\) for all \( z \in \mathbb{Z} \), we can rewrite the given equation:
   \[
   [2x] + [3x] + [7x] = 2008
   \]
   as:
   \[
   [2(z + \theta)] + [3(z + \theta)] + [7(z + \theta)] = 2008
   \]
   Simplifying, we get:
   \[
   2z + [2\theta] + 3z + [3\theta] + 7z + [7\theta] = 2008
   \]
   \[
   12z + [2\theta] + [3\theta] + [7\theta] = 2008
   \]

2. Since \( 0 \le \theta < 1 \), we have:
   \[
   0 \le [2\theta] < 2 \quad \Rightarrow \quad [2\theta] \in \{0, 1\}
   \]
   \[
   0 \le [3\theta] < 3 \quad \Rightarrow \quad [3\theta] \in \{0, 1, 2\}
   \]
   \[
   0 \le [7\theta] < 7 \quad \Rightarrow \quad [7\theta] \in \{0, 1, 2, 3, 4, 5, 6\}
   \]

3. From the equation \( 12z + [2\theta] + [3\theta] + [7\theta] = 2008 \), we get:
   \[
   0 \le 2008 - 12z \le 9
   \]
   Solving for \( z \):
   \[
   1999 \le 12z \le 2008
   \]
   \[
   \frac{1999}{12} \le z \le \frac{2008}{12}
   \]
   \[
   166.5833 \le z \le 167.3333
   \]
   Since \( z \) is an integer, \( z = 167 \).

4. Substituting \( z = 167 \) into the equation:
   \[
   12 \cdot 167 + [2\theta] + [3\theta] + [7\theta] = 2008
   \]
   \[
   2004 + [2\theta] + [3\theta] + [7\theta] = 2008
   \]
   \[
   [2\theta] + [3\theta] + [7\theta] = 4
   \]

5. Possible combinations for \(([2\theta], [3\theta], [7\theta])\) that sum to 4 are:
   \[
   (0, 0, 4), (0, 1, 3), (0, 2, 2), (1, 1, 2)
   \]

6. We now check each case to find valid \(\theta\):

   - **Case I: \((0, 0, 4)\)**
     \[
     0 \le \theta < \frac{1}{2}, \quad 0 \le \theta < \frac{1}{3}, \quad \frac{4}{7} \le \theta < \frac{5}{7}
     \]
     No solution since \(\theta\) cannot satisfy all three conditions simultaneously.

   - **Case II: \((0, 1, 3)\)**
     \[
     0 \le \theta < \frac{1}{2}, \quad \frac{1}{3} \le \theta < \frac{2}{3}, \quad \frac{3}{7} \le \theta < \frac{4}{7}
     \]
     The valid range for \(\theta\) is:
     \[
     \frac{3}{7} \le \theta < \frac{1}{2}
     \]

   - **Case III: \((0, 2, 2)\)**
     \[
     0 \le \theta < \frac{1}{2}, \quad \frac{2}{3} \le \theta < 1, \quad \frac{2}{7} \le \theta < \frac{3}{7}
     \]
     No solution since \(\theta\) cannot satisfy all three conditions simultaneously.

   - **Case IV: \((1, 1, 2)\)**
     \[
     \frac{1}{2} \le \theta < 1, \quad \frac{1}{3} \le \theta < \frac{2}{3}, \quad \frac{2}{7} \le \theta < \frac{3}{7}
     \]
     No solution since \(\theta\) cannot satisfy all three conditions simultaneously.

7. Therefore, the only valid solution is:
   \[
   x = 167 + \theta \quad \text{with} \quad \frac{3}{7} \le \theta < \frac{1}{2}
   \]

The final answer is \( \boxed{ x = 167 + \theta } \) with \( \frac{3}{7} \le \theta < \frac{1}{2} \)