Finding the Fourth Proportional to 2,216.16, 3,324.72 and 656.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,216.16 : 3,324.72 = 656.10 : x
2. Step 2: Convert to fraction form
   2,216.16/3,324.72 = 656.10/x
3. Step 3: Cross multiply
   2,216.16x = 3,324.72 × 656.10
4. Step 4: Simplify right side
   2,216.16x = 2,181,348.79
5. Step 5: Solve for x
   x = 2,181,348.79/2,216.16
6. Step 6: Final answer
   x = 984.29