Finding the Fourth Proportional to 2,216.10, 3,324.72 and 656.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,216.10 : 3,324.72 = 656.16 : x
2. Step 2: Convert to fraction form
   2,216.10/3,324.72 = 656.16/x
3. Step 3: Cross multiply
   2,216.10x = 3,324.72 × 656.16
4. Step 4: Simplify right side
   2,216.10x = 2,181,548.28
5. Step 5: Solve for x
   x = 2,181,548.28/2,216.10
6. Step 6: Final answer
   x = 984.41