Finding the Fourth Proportional to 2,271.07, 3,405.33 and 789.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,271.07 : 3,405.33 = 789.61 : x
2. Step 2: Convert to fraction form
   2,271.07/3,405.33 = 789.61/x
3. Step 3: Cross multiply
   2,271.07x = 3,405.33 × 789.61
4. Step 4: Simplify right side
   2,271.07x = 2,688,882.62
5. Step 5: Solve for x
   x = 2,688,882.62/2,271.07
6. Step 6: Final answer
   x = 1,183.97