Finding the Fourth Proportional to 698,002.72, 963,293.52 and 396,216.16

Step by Step Solution

1. Step 1: Write the proportion equation
   698,002.72 : 963,293.52 = 396,216.16 : x
2. Step 2: Convert to fraction form
   698,002.72/963,293.52 = 396,216.16/x
3. Step 3: Cross multiply
   698,002.72x = 963,293.52 × 396,216.16
4. Step 4: Simplify right side
   698,002.72x = 381,672,459,447.28
5. Step 5: Solve for x
   x = 381,672,459,447.28/698,002.72
6. Step 6: Final answer
   x = 546,806.55