Finding the Fourth Proportional to 826,758.71, 1,240,150.52 and 287,032.12

Step by Step Solution

1. Step 1: Write the proportion equation
   826,758.71 : 1,240,150.52 = 287,032.12 : x
2. Step 2: Convert to fraction form
   826,758.71/1,240,150.52 = 287,032.12/x
3. Step 3: Cross multiply
   826,758.71x = 1,240,150.52 × 287,032.12
4. Step 4: Simplify right side
   826,758.71x = 355,963,032,874.70
5. Step 5: Solve for x
   x = 355,963,032,874.70/826,758.71
6. Step 6: Final answer
   x = 430,552.50