Finding the Fourth Proportional to 2,442.29, 3,661.71 and 1,209.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,442.29 : 3,661.71 = 1,209.42 : x
2. Step 2: Convert to fraction form
   2,442.29/3,661.71 = 1,209.42/x
3. Step 3: Cross multiply
   2,442.29x = 3,661.71 × 1,209.42
4. Step 4: Simplify right side
   2,442.29x = 4,428,545.31
5. Step 5: Solve for x
   x = 4,428,545.31/2,442.29
6. Step 6: Final answer
   x = 1,813.28