Finding the Fourth Proportional to 1,243.32, 1,715.86 and 822.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,243.32 : 1,715.86 = 822.94 : x
2. Step 2: Convert to fraction form
   1,243.32/1,715.86 = 822.94/x
3. Step 3: Cross multiply
   1,243.32x = 1,715.86 × 822.94
4. Step 4: Simplify right side
   1,243.32x = 1,412,049.83
5. Step 5: Solve for x
   x = 1,412,049.83/1,243.32
6. Step 6: Final answer
   x = 1,135.71