Finding the Fourth Proportional to 1,443.98, 1,992.75 and 814.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443.98 : 1,992.75 = 814.76 : x
2. Step 2: Convert to fraction form
   1,443.98/1,992.75 = 814.76/x
3. Step 3: Cross multiply
   1,443.98x = 1,992.75 × 814.76
4. Step 4: Simplify right side
   1,443.98x = 1,623,612.99
5. Step 5: Solve for x
   x = 1,623,612.99/1,443.98
6. Step 6: Final answer
   x = 1,124.40