Finding the Fourth Proportional to 831,665.91, 1,147,699.76 and 449,692.59

Step by Step Solution

1. Step 1: Write the proportion equation
   831,665.91 : 1,147,699.76 = 449,692.59 : x
2. Step 2: Convert to fraction form
   831,665.91/1,147,699.76 = 449,692.59/x
3. Step 3: Cross multiply
   831,665.91x = 1,147,699.76 × 449,692.59
4. Step 4: Simplify right side
   831,665.91x = 516,112,077,616.78
5. Step 5: Solve for x
   x = 516,112,077,616.78/831,665.91
6. Step 6: Final answer
   x = 620,576.21