Finding the Fourth Proportional to 2,217.46, 3,060.06 and 1,222.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,217.46 : 3,060.06 = 1,222.75 : x
2. Step 2: Convert to fraction form
   2,217.46/3,060.06 = 1,222.75/x
3. Step 3: Cross multiply
   2,217.46x = 3,060.06 × 1,222.75
4. Step 4: Simplify right side
   2,217.46x = 3,741,688.37
5. Step 5: Solve for x
   x = 3,741,688.37/2,217.46
6. Step 6: Final answer
   x = 1,687.38