Finding the Fourth Proportional to 2,411.40, 3,615.30 and 871.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,411.40 : 3,615.30 = 871.32 : x
2. Step 2: Convert to fraction form
   2,411.40/3,615.30 = 871.32/x
3. Step 3: Cross multiply
   2,411.40x = 3,615.30 × 871.32
4. Step 4: Simplify right side
   2,411.40x = 3,150,083.20
5. Step 5: Solve for x
   x = 3,150,083.20/2,411.40
6. Step 6: Final answer
   x = 1,306.33