Finding the Fourth Proportional to 2,176,658.86, 3,264,978.03 and 557,424.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,176,658.86 : 3,264,978.03 = 557,424.56 : x
2. Step 2: Convert to fraction form
   2,176,658.86/3,264,978.03 = 557,424.56/x
3. Step 3: Cross multiply
   2,176,658.86x = 3,264,978.03 × 557,424.56
4. Step 4: Simplify right side
   2,176,658.86x = 1,819,978,941,782.42
5. Step 5: Solve for x
   x = 1,819,978,941,782.42/2,176,658.86
6. Step 6: Final answer
   x = 836,134.21