Finding the Fourth Proportional to 880,992, 1,215,665.82 and 518,336.10

Step by Step Solution

1. Step 1: Write the proportion equation
   880,992 : 1,215,665.82 = 518,336.10 : x
2. Step 2: Convert to fraction form
   880,992/1,215,665.82 = 518,336.10/x
3. Step 3: Cross multiply
   880,992x = 1,215,665.82 × 518,336.10
4. Step 4: Simplify right side
   880,992x = 630,123,480,042.10
5. Step 5: Solve for x
   x = 630,123,480,042.10/880,992
6. Step 6: Final answer
   x = 715,243.14