Finding the Fourth Proportional to 985,165.72, 1,359,501.54 and 555,442.12

Step by Step Solution

1. Step 1: Write the proportion equation
   985,165.72 : 1,359,501.54 = 555,442.12 : x
2. Step 2: Convert to fraction form
   985,165.72/1,359,501.54 = 555,442.12/x
3. Step 3: Cross multiply
   985,165.72x = 1,359,501.54 × 555,442.12
4. Step 4: Simplify right side
   985,165.72x = 755,124,417,520.87
5. Step 5: Solve for x
   x = 755,124,417,520.87/985,165.72
6. Step 6: Final answer
   x = 766,494.82