Finding the Fourth Proportional to 1,332,139.25, 1,838,395.91 and 728,527.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,332,139.25 : 1,838,395.91 = 728,527.25 : x
2. Step 2: Convert to fraction form
   1,332,139.25/1,838,395.91 = 728,527.25/x
3. Step 3: Cross multiply
   1,332,139.25x = 1,838,395.91 × 728,527.25
4. Step 4: Simplify right side
   1,332,139.25x = 1,339,321,516,723.55
5. Step 5: Solve for x
   x = 1,339,321,516,723.55/1,332,139.25
6. Step 6: Final answer
   x = 1,005,391.53