Finding the Fourth Proportional to 3,959.79, 5,464.83 and 2,191.96

Step by Step Solution

1. Step 1: Write the proportion equation
   3,959.79 : 5,464.83 = 2,191.96 : x
2. Step 2: Convert to fraction form
   3,959.79/5,464.83 = 2,191.96/x
3. Step 3: Cross multiply
   3,959.79x = 5,464.83 × 2,191.96
4. Step 4: Simplify right side
   3,959.79x = 11,978,688.77
5. Step 5: Solve for x
   x = 11,978,688.77/3,959.79
6. Step 6: Final answer
   x = 3,025.08