Finding the Fourth Proportional to 1,392.83, 1,922.03 and 833.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,392.83 : 1,922.03 = 833.60 : x
2. Step 2: Convert to fraction form
   1,392.83/1,922.03 = 833.60/x
3. Step 3: Cross multiply
   1,392.83x = 1,922.03 × 833.60
4. Step 4: Simplify right side
   1,392.83x = 1,602,190.43
5. Step 5: Solve for x
   x = 1,602,190.43/1,392.83
6. Step 6: Final answer
   x = 1,150.32