Finding the Fourth Proportional to 2,489.31, 3,730.61 and 949.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,489.31 : 3,730.61 = 949.47 : x
2. Step 2: Convert to fraction form
   2,489.31/3,730.61 = 949.47/x
3. Step 3: Cross multiply
   2,489.31x = 3,730.61 × 949.47
4. Step 4: Simplify right side
   2,489.31x = 3,542,097.53
5. Step 5: Solve for x
   x = 3,542,097.53/2,489.31
6. Step 6: Final answer
   x = 1,422.92