Finding the Fourth Proportional to 1,446.13, 1,995.61 and 816.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,446.13 : 1,995.61 = 816.72 : x
2. Step 2: Convert to fraction form
   1,446.13/1,995.61 = 816.72/x
3. Step 3: Cross multiply
   1,446.13x = 1,995.61 × 816.72
4. Step 4: Simplify right side
   1,446.13x = 1,629,854.60
5. Step 5: Solve for x
   x = 1,629,854.60/1,446.13
6. Step 6: Final answer
   x = 1,127.05