Finding the Fourth Proportional to 2,661.51, 3,992.49 and 713.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,661.51 : 3,992.49 = 713.73 : x
2. Step 2: Convert to fraction form
   2,661.51/3,992.49 = 713.73/x
3. Step 3: Cross multiply
   2,661.51x = 3,992.49 × 713.73
4. Step 4: Simplify right side
   2,661.51x = 2,849,559.89
5. Step 5: Solve for x
   x = 2,849,559.89/2,661.51
6. Step 6: Final answer
   x = 1,070.66