Finding the Fourth Proportional to 1,440.20, 1,989.59 and 967.95

Step by Step Solution

1. Step 1: Write the proportion equation
   1,440.20 : 1,989.59 = 967.95 : x
2. Step 2: Convert to fraction form
   1,440.20/1,989.59 = 967.95/x
3. Step 3: Cross multiply
   1,440.20x = 1,989.59 × 967.95
4. Step 4: Simplify right side
   1,440.20x = 1,925,818.80
5. Step 5: Solve for x
   x = 1,925,818.80/1,440.20
6. Step 6: Final answer
   x = 1,337.19