Finding the Fourth Proportional to 1,448.02, 1,998.24 and 818.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,448.02 : 1,998.24 = 818.54 : x
2. Step 2: Convert to fraction form
   1,448.02/1,998.24 = 818.54/x
3. Step 3: Cross multiply
   1,448.02x = 1,998.24 × 818.54
4. Step 4: Simplify right side
   1,448.02x = 1,635,629.38
5. Step 5: Solve for x
   x = 1,635,629.38/1,448.02
6. Step 6: Final answer
   x = 1,129.56