Finding the Fourth Proportional to 2,568.78, 3,860.33 and 1,528.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,568.78 : 3,860.33 = 1,528.92 : x
2. Step 2: Convert to fraction form
   2,568.78/3,860.33 = 1,528.92/x
3. Step 3: Cross multiply
   2,568.78x = 3,860.33 × 1,528.92
4. Step 4: Simplify right side
   2,568.78x = 5,902,128.10
5. Step 5: Solve for x
   x = 5,902,128.10/2,568.78
6. Step 6: Final answer
   x = 2,297.64