Finding the Fourth Proportional to 1,441.90, 1,990.35 and 963.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,441.90 : 1,990.35 = 963.46 : x
2. Step 2: Convert to fraction form
   1,441.90/1,990.35 = 963.46/x
3. Step 3: Cross multiply
   1,441.90x = 1,990.35 × 963.46
4. Step 4: Simplify right side
   1,441.90x = 1,917,622.61
5. Step 5: Solve for x
   x = 1,917,622.61/1,441.90
6. Step 6: Final answer
   x = 1,329.93