Finding the Fourth Proportional to 1,414.85, 1,952.72 and 855.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,414.85 : 1,952.72 = 855.39 : x
2. Step 2: Convert to fraction form
   1,414.85/1,952.72 = 855.39/x
3. Step 3: Cross multiply
   1,414.85x = 1,952.72 × 855.39
4. Step 4: Simplify right side
   1,414.85x = 1,670,337.16
5. Step 5: Solve for x
   x = 1,670,337.16/1,414.85
6. Step 6: Final answer
   x = 1,180.58