Finding the Fourth Proportional to 860,896.02, 1,187,715.61 and 538,483.62

Step by Step Solution

1. Step 1: Write the proportion equation
   860,896.02 : 1,187,715.61 = 538,483.62 : x
2. Step 2: Convert to fraction form
   860,896.02/1,187,715.61 = 538,483.62/x
3. Step 3: Cross multiply
   860,896.02x = 1,187,715.61 × 538,483.62
4. Step 4: Simplify right side
   860,896.02x = 639,565,398,510.89
5. Step 5: Solve for x
   x = 639,565,398,510.89/860,896.02
6. Step 6: Final answer
   x = 742,906.67