Finding the Fourth Proportional to 1,422.58, 1,963.70 and 833.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,422.58 : 1,963.70 = 833.31 : x
2. Step 2: Convert to fraction form
   1,422.58/1,963.70 = 833.31/x
3. Step 3: Cross multiply
   1,422.58x = 1,963.70 × 833.31
4. Step 4: Simplify right side
   1,422.58x = 1,636,370.85
5. Step 5: Solve for x
   x = 1,636,370.85/1,422.58
6. Step 6: Final answer
   x = 1,150.28