Finding the Fourth Proportional to 1,446.03, 1,995.45 and 816.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,446.03 : 1,995.45 = 816.57 : x
2. Step 2: Convert to fraction form
   1,446.03/1,995.45 = 816.57/x
3. Step 3: Cross multiply
   1,446.03x = 1,995.45 × 816.57
4. Step 4: Simplify right side
   1,446.03x = 1,629,424.61
5. Step 5: Solve for x
   x = 1,629,424.61/1,446.03
6. Step 6: Final answer
   x = 1,126.83