Finding the Fourth Proportional to 2,086.92, 3,131.40 and 1,163.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086.92 : 3,131.40 = 1,163.16 : x
2. Step 2: Convert to fraction form
   2,086.92/3,131.40 = 1,163.16/x
3. Step 3: Cross multiply
   2,086.92x = 3,131.40 × 1,163.16
4. Step 4: Simplify right side
   2,086.92x = 3,642,319.22
5. Step 5: Solve for x
   x = 3,642,319.22/2,086.92
6. Step 6: Final answer
   x = 1,745.31