Finding the Fourth Proportional to 987,196.38, 1,480,499.94 and 418,567.88

Step by Step Solution

1. Step 1: Write the proportion equation
   987,196.38 : 1,480,499.94 = 418,567.88 : x
2. Step 2: Convert to fraction form
   987,196.38/1,480,499.94 = 418,567.88/x
3. Step 3: Cross multiply
   987,196.38x = 1,480,499.94 × 418,567.88
4. Step 4: Simplify right side
   987,196.38x = 619,689,721,225.93
5. Step 5: Solve for x
   x = 619,689,721,225.93/987,196.38
6. Step 6: Final answer
   x = 627,726.90