Finding the Fourth Proportional to 1,443.59, 1,992.43 and 814.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443.59 : 1,992.43 = 814.12 : x
2. Step 2: Convert to fraction form
   1,443.59/1,992.43 = 814.12/x
3. Step 3: Cross multiply
   1,443.59x = 1,992.43 × 814.12
4. Step 4: Simplify right side
   1,443.59x = 1,622,073.15
5. Step 5: Solve for x
   x = 1,622,073.15/1,443.59
6. Step 6: Final answer
   x = 1,123.64