Finding the Fourth Proportional to 3,078.54, 4,617.69 and 1,229.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,078.54 : 4,617.69 = 1,229.10 : x
2. Step 2: Convert to fraction form
   3,078.54/4,617.69 = 1,229.10/x
3. Step 3: Cross multiply
   3,078.54x = 4,617.69 × 1,229.10
4. Step 4: Simplify right side
   3,078.54x = 5,675,602.78
5. Step 5: Solve for x
   x = 5,675,602.78/3,078.54
6. Step 6: Final answer
   x = 1,843.60