Finding the Fourth Proportional to 820,662.57, 1,233,158.73 and 441,863.37

Step by Step Solution

1. Step 1: Write the proportion equation
   820,662.57 : 1,233,158.73 = 441,863.37 : x
2. Step 2: Convert to fraction form
   820,662.57/1,233,158.73 = 441,863.37/x
3. Step 3: Cross multiply
   820,662.57x = 1,233,158.73 × 441,863.37
4. Step 4: Simplify right side
   820,662.57x = 544,887,672,182.72
5. Step 5: Solve for x
   x = 544,887,672,182.72/820,662.57
6. Step 6: Final answer
   x = 663,960.67