Finding the Fourth Proportional to 1,443.74, 1,992.24 and 814.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443.74 : 1,992.24 = 814.42 : x
2. Step 2: Convert to fraction form
   1,443.74/1,992.24 = 814.42/x
3. Step 3: Cross multiply
   1,443.74x = 1,992.24 × 814.42
4. Step 4: Simplify right side
   1,443.74x = 1,622,527.12
5. Step 5: Solve for x
   x = 1,622,527.12/1,443.74
6. Step 6: Final answer
   x = 1,123.84