Finding the Fourth Proportional to 3,087.71, 4,257.32 and 2,456.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,087.71 : 4,257.32 = 2,456.31 : x
2. Step 2: Convert to fraction form
   3,087.71/4,257.32 = 2,456.31/x
3. Step 3: Cross multiply
   3,087.71x = 4,257.32 × 2,456.31
4. Step 4: Simplify right side
   3,087.71x = 10,457,297.69
5. Step 5: Solve for x
   x = 10,457,297.69/3,087.71
6. Step 6: Final answer
   x = 3,386.75