Finding the Fourth Proportional to 677,032.83, 934,270.61 and 390,535.83

Step by Step Solution

1. Step 1: Write the proportion equation
   677,032.83 : 934,270.61 = 390,535.83 : x
2. Step 2: Convert to fraction form
   677,032.83/934,270.61 = 390,535.83/x
3. Step 3: Cross multiply
   677,032.83x = 934,270.61 × 390,535.83
4. Step 4: Simplify right side
   677,032.83x = 364,866,146,168.28
5. Step 5: Solve for x
   x = 364,866,146,168.28/677,032.83
6. Step 6: Final answer
   x = 538,919.43