Finding the Fourth Proportional to 2,661.93, 3,992.59 and 713.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,661.93 : 3,992.59 = 713.98 : x
2. Step 2: Convert to fraction form
   2,661.93/3,992.59 = 713.98/x
3. Step 3: Cross multiply
   2,661.93x = 3,992.59 × 713.98
4. Step 4: Simplify right side
   2,661.93x = 2,850,625.84
5. Step 5: Solve for x
   x = 2,850,625.84/2,661.93
6. Step 6: Final answer
   x = 1,070.89