Finding the Fourth Proportional to 2,217.72, 3,314.31 and 2,089.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,217.72 : 3,314.31 = 2,089.68 : x
2. Step 2: Convert to fraction form
   2,217.72/3,314.31 = 2,089.68/x
3. Step 3: Cross multiply
   2,217.72x = 3,314.31 × 2,089.68
4. Step 4: Simplify right side
   2,217.72x = 6,925,847.32
5. Step 5: Solve for x
   x = 6,925,847.32/2,217.72
6. Step 6: Final answer
   x = 3,122.96