Finding the Fourth Proportional to 1,393.43, 1,922.76 and 833.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,393.43 : 1,922.76 = 833.77 : x
2. Step 2: Convert to fraction form
   1,393.43/1,922.76 = 833.77/x
3. Step 3: Cross multiply
   1,393.43x = 1,922.76 × 833.77
4. Step 4: Simplify right side
   1,393.43x = 1,603,134.80
5. Step 5: Solve for x
   x = 1,603,134.80/1,393.43
6. Step 6: Final answer
   x = 1,150.50