Finding the Fourth Proportional to 1,568.41, 2,164.43 and 860.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,568.41 : 2,164.43 = 860.32 : x
2. Step 2: Convert to fraction form
   1,568.41/2,164.43 = 860.32/x
3. Step 3: Cross multiply
   1,568.41x = 2,164.43 × 860.32
4. Step 4: Simplify right side
   1,568.41x = 1,862,091.60
5. Step 5: Solve for x
   x = 1,862,091.60/1,568.41
6. Step 6: Final answer
   x = 1,187.25