Finding the Fourth Proportional to 880,131.96, 1,214,373.96 and 498,158.76

Step by Step Solution

1. Step 1: Write the proportion equation
   880,131.96 : 1,214,373.96 = 498,158.76 : x
2. Step 2: Convert to fraction form
   880,131.96/1,214,373.96 = 498,158.76/x
3. Step 3: Cross multiply
   880,131.96x = 1,214,373.96 × 498,158.76
4. Step 4: Simplify right side
   880,131.96x = 604,951,026,089.89
5. Step 5: Solve for x
   x = 604,951,026,089.89/880,131.96
6. Step 6: Final answer
   x = 687,341.28