3. (8 points) A toy car, on the first day it was priced at a $100\%$ profit, but no one bought it; on the second day, the price was reduced by $10\%$, but still no one bought it; on the third day, the price was reduced by 360 yuan, and it was finally sold. It is known that the selling price is 1.44 times the purchase price. What is the purchase price of the toy car? $\qquad$ yuan.
3. (8 points) A toy car, on the first day it was priced at a $100\%$ profit, but no one came to buy it; on the second day, the price was reduced by $10\%$, but still no one bought it; on the third day, the price was reduced by 360 yuan, and it was finally sold. It is known that the selling price is 1.44 times the purchase price, so the purchase price of the toy car is $\qquad$ yuan.

【Solution】Solution: According to the analysis, let the purchase price of the car be $x$ yuan, then we have:
$$
(1+100\%) x \times(1-10\%)-360=1.44 x
$$

Solving for $x$, we get: $x=1000$.
Therefore, the answer is: 1000 yuan.