Finding the Fourth Proportional to 2,690.69, 4,013.37 and 2,608.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,690.69 : 4,013.37 = 2,608.68 : x
2. Step 2: Convert to fraction form
   2,690.69/4,013.37 = 2,608.68/x
3. Step 3: Cross multiply
   2,690.69x = 4,013.37 × 2,608.68
4. Step 4: Simplify right side
   2,690.69x = 10,469,609.15
5. Step 5: Solve for x
   x = 10,469,609.15/2,690.69
6. Step 6: Final answer
   x = 3,891.04