Finding the Fourth Proportional to 1,422.42, 1,962.96 and 833.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,422.42 : 1,962.96 = 833.28 : x
2. Step 2: Convert to fraction form
   1,422.42/1,962.96 = 833.28/x
3. Step 3: Cross multiply
   1,422.42x = 1,962.96 × 833.28
4. Step 4: Simplify right side
   1,422.42x = 1,635,695.31
5. Step 5: Solve for x
   x = 1,635,695.31/1,422.42
6. Step 6: Final answer
   x = 1,149.94