Finding the Fourth Proportional to 660,648.10, 926,151.50 and 660,648.10

Step by Step Solution

1. Step 1: Write the proportion equation
   660,648.10 : 926,151.50 = 660,648.10 : x
2. Step 2: Convert to fraction form
   660,648.10/926,151.50 = 660,648.10/x
3. Step 3: Cross multiply
   660,648.10x = 926,151.50 × 660,648.10
4. Step 4: Simplify right side
   660,648.10x = 611,860,228,787.15
5. Step 5: Solve for x
   x = 611,860,228,787.15/660,648.10
6. Step 6: Final answer
   x = 926,151.50