Finding the Fourth Proportional to 2,216.10, 3,323.46 and 655.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,216.10 : 3,323.46 = 655.72 : x
2. Step 2: Convert to fraction form
   2,216.10/3,323.46 = 655.72/x
3. Step 3: Cross multiply
   2,216.10x = 3,323.46 × 655.72
4. Step 4: Simplify right side
   2,216.10x = 2,179,259.19
5. Step 5: Solve for x
   x = 2,179,259.19/2,216.10
6. Step 6: Final answer
   x = 983.38