Finding the Fourth Proportional to 1,423.31, 1,963.98 and 833.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,423.31 : 1,963.98 = 833.63 : x
2. Step 2: Convert to fraction form
   1,423.31/1,963.98 = 833.63/x
3. Step 3: Cross multiply
   1,423.31x = 1,963.98 × 833.63
4. Step 4: Simplify right side
   1,423.31x = 1,637,222.83
5. Step 5: Solve for x
   x = 1,637,222.83/1,423.31
6. Step 6: Final answer
   x = 1,150.30