Finding the Fourth Proportional to 831,451.72, 1,147,404.24 and 449,478.52

Step by Step Solution

1. Step 1: Write the proportion equation
   831,451.72 : 1,147,404.24 = 449,478.52 : x
2. Step 2: Convert to fraction form
   831,451.72/1,147,404.24 = 449,478.52/x
3. Step 3: Cross multiply
   831,451.72x = 1,147,404.24 × 449,478.52
4. Step 4: Simplify right side
   831,451.72x = 515,733,559,636.93
5. Step 5: Solve for x
   x = 515,733,559,636.93/831,451.72
6. Step 6: Final answer
   x = 620,280.83