Finding the Fourth Proportional to 2,452.50, 3,677.55 and 990.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,452.50 : 3,677.55 = 990.54 : x
2. Step 2: Convert to fraction form
   2,452.50/3,677.55 = 990.54/x
3. Step 3: Cross multiply
   2,452.50x = 3,677.55 × 990.54
4. Step 4: Simplify right side
   2,452.50x = 3,642,760.38
5. Step 5: Solve for x
   x = 3,642,760.38/2,452.50
6. Step 6: Final answer
   x = 1,485.33