Finding the Fourth Proportional to 2,615.16, 3,921.91 and 883.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,615.16 : 3,921.91 = 883.38 : x
2. Step 2: Convert to fraction form
   2,615.16/3,921.91 = 883.38/x
3. Step 3: Cross multiply
   2,615.16x = 3,921.91 × 883.38
4. Step 4: Simplify right side
   2,615.16x = 3,464,536.86
5. Step 5: Solve for x
   x = 3,464,536.86/2,615.16
6. Step 6: Final answer
   x = 1,324.79