Finding the Fourth Proportional to 1,443.75, 1,992.38 and 822.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443.75 : 1,992.38 = 822.87 : x
2. Step 2: Convert to fraction form
   1,443.75/1,992.38 = 822.87/x
3. Step 3: Cross multiply
   1,443.75x = 1,992.38 × 822.87
4. Step 4: Simplify right side
   1,443.75x = 1,639,469.73
5. Step 5: Solve for x
   x = 1,639,469.73/1,443.75
6. Step 6: Final answer
   x = 1,135.56