Finding the Fourth Proportional to 2,156,688.24, 3,234,915.72 and 660,784.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,156,688.24 : 3,234,915.72 = 660,784.56 : x
2. Step 2: Convert to fraction form
   2,156,688.24/3,234,915.72 = 660,784.56/x
3. Step 3: Cross multiply
   2,156,688.24x = 3,234,915.72 × 660,784.56
4. Step 4: Simplify right side
   2,156,688.24x = 2,137,582,360,677.28
5. Step 5: Solve for x
   x = 2,137,582,360,677.28/2,156,688.24
6. Step 6: Final answer
   x = 991,141.10