Finding the Fourth Proportional to 815.22, 1,123.92 and 674.82

Step by Step Solution

1. Step 1: Write the proportion equation
   815.22 : 1,123.92 = 674.82 : x
2. Step 2: Convert to fraction form
   815.22/1,123.92 = 674.82/x
3. Step 3: Cross multiply
   815.22x = 1,123.92 × 674.82
4. Step 4: Simplify right side
   815.22x = 758,443.69
5. Step 5: Solve for x
   x = 758,443.69/815.22
6. Step 6: Final answer
   x = 930.35