Finding the Fourth Proportional to 2,617.89, 3,613.25 and 1,660.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,617.89 : 3,613.25 = 1,660.18 : x
2. Step 2: Convert to fraction form
   2,617.89/3,613.25 = 1,660.18/x
3. Step 3: Cross multiply
   2,617.89x = 3,613.25 × 1,660.18
4. Step 4: Simplify right side
   2,617.89x = 5,998,650.85
5. Step 5: Solve for x
   x = 5,998,650.85/2,617.89
6. Step 6: Final answer
   x = 2,291.40