Finding the Fourth Proportional to 2,131.26, 3,196.88 and 1,163.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.26 : 3,196.88 = 1,163.50 : x
2. Step 2: Convert to fraction form
   2,131.26/3,196.88 = 1,163.50/x
3. Step 3: Cross multiply
   2,131.26x = 3,196.88 × 1,163.50
4. Step 4: Simplify right side
   2,131.26x = 3,719,569.88
5. Step 5: Solve for x
   x = 3,719,569.88/2,131.26
6. Step 6: Final answer
   x = 1,745.24