Finding the Fourth Proportional to 2,131.22, 3,197.23 and 961.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.22 : 3,197.23 = 961.27 : x
2. Step 2: Convert to fraction form
   2,131.22/3,197.23 = 961.27/x
3. Step 3: Cross multiply
   2,131.22x = 3,197.23 × 961.27
4. Step 4: Simplify right side
   2,131.22x = 3,073,390.89
5. Step 5: Solve for x
   x = 3,073,390.89/2,131.22
6. Step 6: Final answer
   x = 1,442.08