Finding the Fourth Proportional to 2,023.80, 3,032.50 and 789.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,023.80 : 3,032.50 = 789.72 : x
2. Step 2: Convert to fraction form
   2,023.80/3,032.50 = 789.72/x
3. Step 3: Cross multiply
   2,023.80x = 3,032.50 × 789.72
4. Step 4: Simplify right side
   2,023.80x = 2,394,825.90
5. Step 5: Solve for x
   x = 2,394,825.90/2,023.80
6. Step 6: Final answer
   x = 1,183.33