Finding the Fourth Proportional to 2,442.81, 3,661.91 and 798.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,442.81 : 3,661.91 = 798.20 : x
2. Step 2: Convert to fraction form
   2,442.81/3,661.91 = 798.20/x
3. Step 3: Cross multiply
   2,442.81x = 3,661.91 × 798.20
4. Step 4: Simplify right side
   2,442.81x = 2,922,951.59
5. Step 5: Solve for x
   x = 2,922,951.59/2,442.81
6. Step 6: Final answer
   x = 1,196.55