Finding the Fourth Proportional to 2,459.38, 3,689.49 and 999.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,459.38 : 3,689.49 = 999.55 : x
2. Step 2: Convert to fraction form
   2,459.38/3,689.49 = 999.55/x
3. Step 3: Cross multiply
   2,459.38x = 3,689.49 × 999.55
4. Step 4: Simplify right side
   2,459.38x = 3,687,829.73
5. Step 5: Solve for x
   x = 3,687,829.73/2,459.38
6. Step 6: Final answer
   x = 1,499.50