Finding the Fourth Proportional to 994.72, 1,489.24 and 789.59

Step by Step Solution

1. Step 1: Write the proportion equation
   994.72 : 1,489.24 = 789.59 : x
2. Step 2: Convert to fraction form
   994.72/1,489.24 = 789.59/x
3. Step 3: Cross multiply
   994.72x = 1,489.24 × 789.59
4. Step 4: Simplify right side
   994.72x = 1,175,879.59
5. Step 5: Solve for x
   x = 1,175,879.59/994.72
6. Step 6: Final answer
   x = 1,182.12