Finding the Fourth Proportional to 678,564.72, 1,016,296.37 and 323,827.86

Step by Step Solution

1. Step 1: Write the proportion equation
   678,564.72 : 1,016,296.37 = 323,827.86 : x
2. Step 2: Convert to fraction form
   678,564.72/1,016,296.37 = 323,827.86/x
3. Step 3: Cross multiply
   678,564.72x = 1,016,296.37 × 323,827.86
4. Step 4: Simplify right side
   678,564.72x = 329,105,077,003.73
5. Step 5: Solve for x
   x = 329,105,077,003.73/678,564.72
6. Step 6: Final answer
   x = 485,001.75