Finding the Fourth Proportional to 2,131.50, 3,194.46 and 961.44

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.50 : 3,194.46 = 961.44 : x
2. Step 2: Convert to fraction form
   2,131.50/3,194.46 = 961.44/x
3. Step 3: Cross multiply
   2,131.50x = 3,194.46 × 961.44
4. Step 4: Simplify right side
   2,131.50x = 3,071,281.62
5. Step 5: Solve for x
   x = 3,071,281.62/2,131.50
6. Step 6: Final answer
   x = 1,440.90