Finding the Fourth Proportional to 930,876.30, 1,284,610.59 and 522,978.12

Step by Step Solution

1. Step 1: Write the proportion equation
   930,876.30 : 1,284,610.59 = 522,978.12 : x
2. Step 2: Convert to fraction form
   930,876.30/1,284,610.59 = 522,978.12/x
3. Step 3: Cross multiply
   930,876.30x = 1,284,610.59 × 522,978.12
4. Step 4: Simplify right side
   930,876.30x = 671,823,231,290.29
5. Step 5: Solve for x
   x = 671,823,231,290.29/930,876.30
6. Step 6: Final answer
   x = 721,710.53