Finding the Fourth Proportional to 1,568.43, 2,164.45 and 860.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,568.43 : 2,164.45 = 860.34 : x
2. Step 2: Convert to fraction form
   1,568.43/2,164.45 = 860.34/x
3. Step 3: Cross multiply
   1,568.43x = 2,164.45 × 860.34
4. Step 4: Simplify right side
   1,568.43x = 1,862,157.50
5. Step 5: Solve for x
   x = 1,862,157.50/1,568.43
6. Step 6: Final answer
   x = 1,187.28