Finding the Fourth Proportional to 2,614.56, 3,921.72 and 883.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,614.56 : 3,921.72 = 883.20 : x
2. Step 2: Convert to fraction form
   2,614.56/3,921.72 = 883.20/x
3. Step 3: Cross multiply
   2,614.56x = 3,921.72 × 883.20
4. Step 4: Simplify right side
   2,614.56x = 3,463,663.10
5. Step 5: Solve for x
   x = 3,463,663.10/2,614.56
6. Step 6: Final answer
   x = 1,324.76