Finding the Fourth Proportional to 2,217.29, 3,060.03 and 1,222.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,217.29 : 3,060.03 = 1,222.76 : x
2. Step 2: Convert to fraction form
   2,217.29/3,060.03 = 1,222.76/x
3. Step 3: Cross multiply
   2,217.29x = 3,060.03 × 1,222.76
4. Step 4: Simplify right side
   2,217.29x = 3,741,694.52
5. Step 5: Solve for x
   x = 3,741,694.52/2,217.29
6. Step 6: Final answer
   x = 1,687.51