Finding the Fourth Proportional to 1,373.15, 2,057.81 and 757.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,373.15 : 2,057.81 = 757.15 : x
2. Step 2: Convert to fraction form
   1,373.15/2,057.81 = 757.15/x
3. Step 3: Cross multiply
   1,373.15x = 2,057.81 × 757.15
4. Step 4: Simplify right side
   1,373.15x = 1,558,061.91
5. Step 5: Solve for x
   x = 1,558,061.91/1,373.15
6. Step 6: Final answer
   x = 1,134.66