Finding the Fourth Proportional to 1,448.53, 1,998.89 and 819.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,448.53 : 1,998.89 = 819.02 : x
2. Step 2: Convert to fraction form
   1,448.53/1,998.89 = 819.02/x
3. Step 3: Cross multiply
   1,448.53x = 1,998.89 × 819.02
4. Step 4: Simplify right side
   1,448.53x = 1,637,135.72
5. Step 5: Solve for x
   x = 1,637,135.72/1,448.53
6. Step 6: Final answer
   x = 1,130.20