Finding the Fourth Proportional to 2,216.92, 3,059.38 and 1,222.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,216.92 : 3,059.38 = 1,222.24 : x
2. Step 2: Convert to fraction form
   2,216.92/3,059.38 = 1,222.24/x
3. Step 3: Cross multiply
   2,216.92x = 3,059.38 × 1,222.24
4. Step 4: Simplify right side
   2,216.92x = 3,739,287.06
5. Step 5: Solve for x
   x = 3,739,287.06/2,216.92
6. Step 6: Final answer
   x = 1,686.70