Finding the Fourth Proportional to 2,659.68, 3,983.04 and 2,581.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,659.68 : 3,983.04 = 2,581.92 : x
2. Step 2: Convert to fraction form
   2,659.68/3,983.04 = 2,581.92/x
3. Step 3: Cross multiply
   2,659.68x = 3,983.04 × 2,581.92
4. Step 4: Simplify right side
   2,659.68x = 10,283,890.64
5. Step 5: Solve for x
   x = 10,283,890.64/2,659.68
6. Step 6: Final answer
   x = 3,866.59