Finding the Fourth Proportional to 1,445.72, 1,995.04 and 816.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,445.72 : 1,995.04 = 816.27 : x
2. Step 2: Convert to fraction form
   1,445.72/1,995.04 = 816.27/x
3. Step 3: Cross multiply
   1,445.72x = 1,995.04 × 816.27
4. Step 4: Simplify right side
   1,445.72x = 1,628,491.30
5. Step 5: Solve for x
   x = 1,628,491.30/1,445.72
6. Step 6: Final answer
   x = 1,126.42