Finding the Fourth Proportional to 1,446.95, 1,996.79 and 817.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,446.95 : 1,996.79 = 817.48 : x
2. Step 2: Convert to fraction form
   1,446.95/1,996.79 = 817.48/x
3. Step 3: Cross multiply
   1,446.95x = 1,996.79 × 817.48
4. Step 4: Simplify right side
   1,446.95x = 1,632,325.37
5. Step 5: Solve for x
   x = 1,632,325.37/1,446.95
6. Step 6: Final answer
   x = 1,128.12