Finding the Fourth Proportional to 983,502.72, 1,357,218.72 and 553,781.76

Step by Step Solution

1. Step 1: Write the proportion equation
   983,502.72 : 1,357,218.72 = 553,781.76 : x
2. Step 2: Convert to fraction form
   983,502.72/1,357,218.72 = 553,781.76/x
3. Step 3: Cross multiply
   983,502.72x = 1,357,218.72 × 553,781.76
4. Step 4: Simplify right side
   983,502.72x = 751,602,971,466.55
5. Step 5: Solve for x
   x = 751,602,971,466.55/983,502.72
6. Step 6: Final answer
   x = 764,210.36