Finding the Fourth Proportional to 3,974.74, 5,964.82 and 2,659.98

Step by Step Solution

1. Step 1: Write the proportion equation
   3,974.74 : 5,964.82 = 2,659.98 : x
2. Step 2: Convert to fraction form
   3,974.74/5,964.82 = 2,659.98/x
3. Step 3: Cross multiply
   3,974.74x = 5,964.82 × 2,659.98
4. Step 4: Simplify right side
   3,974.74x = 15,866,301.90
5. Step 5: Solve for x
   x = 15,866,301.90/3,974.74
6. Step 6: Final answer
   x = 3,991.78