Finding the Fourth Proportional to 2,156,722.24, 3,234,966.72 and 660,818.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,156,722.24 : 3,234,966.72 = 660,818.56 : x
2. Step 2: Convert to fraction form
   2,156,722.24/3,234,966.72 = 660,818.56/x
3. Step 3: Cross multiply
   2,156,722.24x = 3,234,966.72 × 660,818.56
4. Step 4: Simplify right side
   2,156,722.24x = 2,137,726,049,558.32
5. Step 5: Solve for x
   x = 2,137,726,049,558.32/2,156,722.24
6. Step 6: Final answer
   x = 991,192.10