Finding the Fourth Proportional to 2,328.10, 3,490.71 and 789.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,328.10 : 3,490.71 = 789.22 : x
2. Step 2: Convert to fraction form
   2,328.10/3,490.71 = 789.22/x
3. Step 3: Cross multiply
   2,328.10x = 3,490.71 × 789.22
4. Step 4: Simplify right side
   2,328.10x = 2,754,938.15
5. Step 5: Solve for x
   x = 2,754,938.15/2,328.10
6. Step 6: Final answer
   x = 1,183.34