Finding the Fourth Proportional to 2,959.76, 4,413.20 and 2,853.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,959.76 : 4,413.20 = 2,853.05 : x
2. Step 2: Convert to fraction form
   2,959.76/4,413.20 = 2,853.05/x
3. Step 3: Cross multiply
   2,959.76x = 4,413.20 × 2,853.05
4. Step 4: Simplify right side
   2,959.76x = 12,591,043.93
5. Step 5: Solve for x
   x = 12,591,043.93/2,959.76
6. Step 6: Final answer
   x = 4,254.07