Finding the Fourth Proportional to 2,131.67, 3,198.90 and 962.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.67 : 3,198.90 = 962.30 : x
2. Step 2: Convert to fraction form
   2,131.67/3,198.90 = 962.30/x
3. Step 3: Cross multiply
   2,131.67x = 3,198.90 × 962.30
4. Step 4: Simplify right side
   2,131.67x = 3,078,301.47
5. Step 5: Solve for x
   x = 3,078,301.47/2,131.67
6. Step 6: Final answer
   x = 1,444.08