Finding the Fourth Proportional to 2,616.62, 3,609.04 and 1,659.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,616.62 : 3,609.04 = 1,659.20 : x
2. Step 2: Convert to fraction form
   2,616.62/3,609.04 = 1,659.20/x
3. Step 3: Cross multiply
   2,616.62x = 3,609.04 × 1,659.20
4. Step 4: Simplify right side
   2,616.62x = 5,988,119.17
5. Step 5: Solve for x
   x = 5,988,119.17/2,616.62
6. Step 6: Final answer
   x = 2,288.49