Finding the Fourth Proportional to 825,576.89, 1,139,294.12 and 458,109.86

Step by Step Solution

1. Step 1: Write the proportion equation
   825,576.89 : 1,139,294.12 = 458,109.86 : x
2. Step 2: Convert to fraction form
   825,576.89/1,139,294.12 = 458,109.86/x
3. Step 3: Cross multiply
   825,576.89x = 1,139,294.12 × 458,109.86
4. Step 4: Simplify right side
   825,576.89x = 521,921,861,825.00
5. Step 5: Solve for x
   x = 521,921,861,825.00/825,576.89
6. Step 6: Final answer
   x = 632,190.50