Finding the Fourth Proportional to 1,123,563.55, 1,685,564.03 and 324,871.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123,563.55 : 1,685,564.03 = 324,871.15 : x
2. Step 2: Convert to fraction form
   1,123,563.55/1,685,564.03 = 324,871.15/x
3. Step 3: Cross multiply
   1,123,563.55x = 1,685,564.03 × 324,871.15
4. Step 4: Simplify right side
   1,123,563.55x = 547,591,123,200.38
5. Step 5: Solve for x
   x = 547,591,123,200.38/1,123,563.55
6. Step 6: Final answer
   x = 487,369.96