Finding the Fourth Proportional to 2,961.10, 4,081.35 and 2,399.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,961.10 : 4,081.35 = 2,399.50 : x
2. Step 2: Convert to fraction form
   2,961.10/4,081.35 = 2,399.50/x
3. Step 3: Cross multiply
   2,961.10x = 4,081.35 × 2,399.50
4. Step 4: Simplify right side
   2,961.10x = 9,793,199.33
5. Step 5: Solve for x
   x = 9,793,199.33/2,961.10
6. Step 6: Final answer
   x = 3,307.28