Finding the Fourth Proportional to 2,864.03, 3,959.24 and 2,568.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,864.03 : 3,959.24 = 2,568.78 : x
2. Step 2: Convert to fraction form
   2,864.03/3,959.24 = 2,568.78/x
3. Step 3: Cross multiply
   2,864.03x = 3,959.24 × 2,568.78
4. Step 4: Simplify right side
   2,864.03x = 10,170,403.68
5. Step 5: Solve for x
   x = 10,170,403.68/2,864.03
6. Step 6: Final answer
   x = 3,551.09