Finding the Fourth Proportional to 1,423.46, 1,963.83 and 863.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,423.46 : 1,963.83 = 863.73 : x
2. Step 2: Convert to fraction form
   1,423.46/1,963.83 = 863.73/x
3. Step 3: Cross multiply
   1,423.46x = 1,963.83 × 863.73
4. Step 4: Simplify right side
   1,423.46x = 1,696,218.89
5. Step 5: Solve for x
   x = 1,696,218.89/1,423.46
6. Step 6: Final answer
   x = 1,191.61