Finding the Fourth Proportional to 1,443.68, 1,992.28 and 814.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443.68 : 1,992.28 = 814.24 : x
2. Step 2: Convert to fraction form
   1,443.68/1,992.28 = 814.24/x
3. Step 3: Cross multiply
   1,443.68x = 1,992.28 × 814.24
4. Step 4: Simplify right side
   1,443.68x = 1,622,194.07
5. Step 5: Solve for x
   x = 1,622,194.07/1,443.68
6. Step 6: Final answer
   x = 1,123.65