Finding the Fourth Proportional to 914.56, 1,258.34 and 789.82

Step by Step Solution

1. Step 1: Write the proportion equation
   914.56 : 1,258.34 = 789.82 : x
2. Step 2: Convert to fraction form
   914.56/1,258.34 = 789.82/x
3. Step 3: Cross multiply
   914.56x = 1,258.34 × 789.82
4. Step 4: Simplify right side
   914.56x = 993,855.00
5. Step 5: Solve for x
   x = 993,855.00/914.56
6. Step 6: Final answer
   x = 1,086.71