Finding the Fourth Proportional to 2,551.25, 3,825.47 and 990.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,551.25 : 3,825.47 = 990.29 : x
2. Step 2: Convert to fraction form
   2,551.25/3,825.47 = 990.29/x
3. Step 3: Cross multiply
   2,551.25x = 3,825.47 × 990.29
4. Step 4: Simplify right side
   2,551.25x = 3,788,300.61
5. Step 5: Solve for x
   x = 3,788,300.61/2,551.25
6. Step 6: Final answer
   x = 1,484.88