Finding the Fourth Proportional to 2,131.91, 3,198.84 and 962.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.91 : 3,198.84 = 962.22 : x
2. Step 2: Convert to fraction form
   2,131.91/3,198.84 = 962.22/x
3. Step 3: Cross multiply
   2,131.91x = 3,198.84 × 962.22
4. Step 4: Simplify right side
   2,131.91x = 3,077,987.82
5. Step 5: Solve for x
   x = 3,077,987.82/2,131.91
6. Step 6: Final answer
   x = 1,443.77