Finding the Fourth Proportional to 2,705.35, 4,057.76 and 757.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,705.35 : 4,057.76 = 757.57 : x
2. Step 2: Convert to fraction form
   2,705.35/4,057.76 = 757.57/x
3. Step 3: Cross multiply
   2,705.35x = 4,057.76 × 757.57
4. Step 4: Simplify right side
   2,705.35x = 3,074,033.46
5. Step 5: Solve for x
   x = 3,074,033.46/2,705.35
6. Step 6: Final answer
   x = 1,136.28