Finding the Fourth Proportional to 2,088.79, 3,131.33 and 789.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,088.79 : 3,131.33 = 789.35 : x
2. Step 2: Convert to fraction form
   2,088.79/3,131.33 = 789.35/x
3. Step 3: Cross multiply
   2,088.79x = 3,131.33 × 789.35
4. Step 4: Simplify right side
   2,088.79x = 2,471,695.73
5. Step 5: Solve for x
   x = 2,471,695.73/2,088.79
6. Step 6: Final answer
   x = 1,183.32