Finding the Fourth Proportional to 3,454.72, 5,155.33 and 3,085.54

Step by Step Solution

1. Step 1: Write the proportion equation
   3,454.72 : 5,155.33 = 3,085.54 : x
2. Step 2: Convert to fraction form
   3,454.72/5,155.33 = 3,085.54/x
3. Step 3: Cross multiply
   3,454.72x = 5,155.33 × 3,085.54
4. Step 4: Simplify right side
   3,454.72x = 15,906,976.93
5. Step 5: Solve for x
   x = 15,906,976.93/3,454.72
6. Step 6: Final answer
   x = 4,604.42