Finding the Fourth Proportional to 2,959.11, 4,111.60 and 2,928.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,959.11 : 4,111.60 = 2,928.27 : x
2. Step 2: Convert to fraction form
   2,959.11/4,111.60 = 2,928.27/x
3. Step 3: Cross multiply
   2,959.11x = 4,111.60 × 2,928.27
4. Step 4: Simplify right side
   2,959.11x = 12,039,861.69
5. Step 5: Solve for x
   x = 12,039,861.69/2,959.11
6. Step 6: Final answer
   x = 4,068.74