Finding the Fourth Proportional to 914.27, 1,259.16 and 789.89

Step by Step Solution

1. Step 1: Write the proportion equation
   914.27 : 1,259.16 = 789.89 : x
2. Step 2: Convert to fraction form
   914.27/1,259.16 = 789.89/x
3. Step 3: Cross multiply
   914.27x = 1,259.16 × 789.89
4. Step 4: Simplify right side
   914.27x = 994,597.89
5. Step 5: Solve for x
   x = 994,597.89/914.27
6. Step 6: Final answer
   x = 1,087.86