Finding the Fourth Proportional to 1,386.52, 1,913.40 and 757.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,386.52 : 1,913.40 = 757.04 : x
2. Step 2: Convert to fraction form
   1,386.52/1,913.40 = 757.04/x
3. Step 3: Cross multiply
   1,386.52x = 1,913.40 × 757.04
4. Step 4: Simplify right side
   1,386.52x = 1,448,520.34
5. Step 5: Solve for x
   x = 1,448,520.34/1,386.52
6. Step 6: Final answer
   x = 1,044.72