Finding the Fourth Proportional to 2,549.46, 3,825.47 and 990.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,549.46 : 3,825.47 = 990.54 : x
2. Step 2: Convert to fraction form
   2,549.46/3,825.47 = 990.54/x
3. Step 3: Cross multiply
   2,549.46x = 3,825.47 × 990.54
4. Step 4: Simplify right side
   2,549.46x = 3,789,276.10
5. Step 5: Solve for x
   x = 3,789,276.10/2,549.46
6. Step 6: Final answer
   x = 1,486.31