Finding the Fourth Proportional to 880,876.72, 1,215,611.04 and 478,468.72

Step by Step Solution

1. Step 1: Write the proportion equation
   880,876.72 : 1,215,611.04 = 478,468.72 : x
2. Step 2: Convert to fraction form
   880,876.72/1,215,611.04 = 478,468.72/x
3. Step 3: Cross multiply
   880,876.72x = 1,215,611.04 × 478,468.72
4. Step 4: Simplify right side
   880,876.72x = 581,631,858,326.67
5. Step 5: Solve for x
   x = 581,631,858,326.67/880,876.72
6. Step 6: Final answer
   x = 660,287.47