Final answer:
To determine how many men are needed to lift a 1000 kg car, a proportion calculation indicates that at least 5 people would be required.
Step-by-step explanation:
To solve the question '2 men can lift a 409.09 Kg car. How many people do you need to lift 1000 kg?', we use a simple proportion calculation. If it takes 2 men to lift 409.09 kg, then the number of men needed to lift 1000 kg can be found by setting up a ratio: 2 men / 409.09 kg = x men / 1000 kg. Solving for x, we find x = (2 men * 1000 kg) / 409.09 kg, which gives us x = 4.89 men. Since you can't have a fraction of a person, we would need at least 5 people to lift the 1000 kg car.