Finding the Fourth Proportional to 1,352.27, 1,866.18 and 854.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,352.27 : 1,866.18 = 854.72 : x
2. Step 2: Convert to fraction form
   1,352.27/1,866.18 = 854.72/x
3. Step 3: Cross multiply
   1,352.27x = 1,866.18 × 854.72
4. Step 4: Simplify right side
   1,352.27x = 1,595,066.04
5. Step 5: Solve for x
   x = 1,595,066.04/1,352.27
6. Step 6: Final answer
   x = 1,179.55