Finding the Fourth Proportional to 930,717.72, 1,284,510.72 and 522,819.72

Step by Step Solution

1. Step 1: Write the proportion equation
   930,717.72 : 1,284,510.72 = 522,819.72 : x
2. Step 2: Convert to fraction form
   930,717.72/1,284,510.72 = 522,819.72/x
3. Step 3: Cross multiply
   930,717.72x = 1,284,510.72 × 522,819.72
4. Step 4: Simplify right side
   930,717.72x = 671,567,534,967.40
5. Step 5: Solve for x
   x = 671,567,534,967.40/930,717.72
6. Step 6: Final answer
   x = 721,558.77