Finding the Fourth Proportional to 2,217.04, 3,059.57 and 1,222.36

Step by Step Solution

1. Step 1: Write the proportion equation
   2,217.04 : 3,059.57 = 1,222.36 : x
2. Step 2: Convert to fraction form
   2,217.04/3,059.57 = 1,222.36/x
3. Step 3: Cross multiply
   2,217.04x = 3,059.57 × 1,222.36
4. Step 4: Simplify right side
   2,217.04x = 3,739,891.39
5. Step 5: Solve for x
   x = 3,739,891.39/2,217.04
6. Step 6: Final answer
   x = 1,686.89