Finding the Fourth Proportional to 2,660.98, 3,991.50 and 713.14

Step by Step Solution

1. Step 1: Write the proportion equation
   2,660.98 : 3,991.50 = 713.14 : x
2. Step 2: Convert to fraction form
   2,660.98/3,991.50 = 713.14/x
3. Step 3: Cross multiply
   2,660.98x = 3,991.50 × 713.14
4. Step 4: Simplify right side
   2,660.98x = 2,846,498.31
5. Step 5: Solve for x
   x = 2,846,498.31/2,660.98
6. Step 6: Final answer
   x = 1,069.72