Finding the Fourth Proportional to 1,446.55, 1,996.17 and 808.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,446.55 : 1,996.17 = 808.38 : x
2. Step 2: Convert to fraction form
   1,446.55/1,996.17 = 808.38/x
3. Step 3: Cross multiply
   1,446.55x = 1,996.17 × 808.38
4. Step 4: Simplify right side
   1,446.55x = 1,613,663.15
5. Step 5: Solve for x
   x = 1,613,663.15/1,446.55
6. Step 6: Final answer
   x = 1,115.53