Finding the Fourth Proportional to 1,087,061.90, 1,630,086.62 and 403,472.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,087,061.90 : 1,630,086.62 = 403,472.70 : x
2. Step 2: Convert to fraction form
   1,087,061.90/1,630,086.62 = 403,472.70/x
3. Step 3: Cross multiply
   1,087,061.90x = 1,630,086.62 × 403,472.70
4. Step 4: Simplify right side
   1,087,061.90x = 657,695,447,787.91
5. Step 5: Solve for x
   x = 657,695,447,787.91/1,087,061.90
6. Step 6: Final answer
   x = 605,021.16