Finding the Fourth Proportional to 1,423.09, 1,963.21 and 833.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,423.09 : 1,963.21 = 833.37 : x
2. Step 2: Convert to fraction form
   1,423.09/1,963.21 = 833.37/x
3. Step 3: Cross multiply
   1,423.09x = 1,963.21 × 833.37
4. Step 4: Simplify right side
   1,423.09x = 1,636,080.32
5. Step 5: Solve for x
   x = 1,636,080.32/1,423.09
6. Step 6: Final answer
   x = 1,149.67