Finding the Fourth Proportional to 1,446.90, 1,996.69 and 817.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,446.90 : 1,996.69 = 817.42 : x
2. Step 2: Convert to fraction form
   1,446.90/1,996.69 = 817.42/x
3. Step 3: Cross multiply
   1,446.90x = 1,996.69 × 817.42
4. Step 4: Simplify right side
   1,446.90x = 1,632,134.34
5. Step 5: Solve for x
   x = 1,632,134.34/1,446.90
6. Step 6: Final answer
   x = 1,128.02