Finding the Fourth Proportional to 2,617.96, 3,613.42 and 1,609.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,617.96 : 3,613.42 = 1,609.91 : x
2. Step 2: Convert to fraction form
   2,617.96/3,613.42 = 1,609.91/x
3. Step 3: Cross multiply
   2,617.96x = 3,613.42 × 1,609.91
4. Step 4: Simplify right side
   2,617.96x = 5,817,284.12
5. Step 5: Solve for x
   x = 5,817,284.12/2,617.96
6. Step 6: Final answer
   x = 2,222.07