Finding the Fourth Proportional to 1,423.73, 1,963.80 and 834.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,423.73 : 1,963.80 = 834.28 : x
2. Step 2: Convert to fraction form
   1,423.73/1,963.80 = 834.28/x
3. Step 3: Cross multiply
   1,423.73x = 1,963.80 × 834.28
4. Step 4: Simplify right side
   1,423.73x = 1,638,354.15
5. Step 5: Solve for x
   x = 1,638,354.15/1,423.73
6. Step 6: Final answer
   x = 1,150.75