Finding the Fourth Proportional to 2,608.82, 3,896.16 and 2,089.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,608.82 : 3,896.16 = 2,089.62 : x
2. Step 2: Convert to fraction form
   2,608.82/3,896.16 = 2,089.62/x
3. Step 3: Cross multiply
   2,608.82x = 3,896.16 × 2,089.62
4. Step 4: Simplify right side
   2,608.82x = 8,141,493.86
5. Step 5: Solve for x
   x = 8,141,493.86/2,608.82
6. Step 6: Final answer
   x = 3,120.76