Finding the Fourth Proportional to 3,959.12, 5,941.04 and 2,111.60

Step by Step Solution

1. Step 1: Write the proportion equation
   3,959.12 : 5,941.04 = 2,111.60 : x
2. Step 2: Convert to fraction form
   3,959.12/5,941.04 = 2,111.60/x
3. Step 3: Cross multiply
   3,959.12x = 5,941.04 × 2,111.60
4. Step 4: Simplify right side
   3,959.12x = 12,545,100.06
5. Step 5: Solve for x
   x = 12,545,100.06/3,959.12
6. Step 6: Final answer
   x = 3,168.66