Finding the Fourth Proportional to 1,448.45, 1,998.76 and 819.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,448.45 : 1,998.76 = 819.01 : x
2. Step 2: Convert to fraction form
   1,448.45/1,998.76 = 819.01/x
3. Step 3: Cross multiply
   1,448.45x = 1,998.76 × 819.01
4. Step 4: Simplify right side
   1,448.45x = 1,637,004.43
5. Step 5: Solve for x
   x = 1,637,004.43/1,448.45
6. Step 6: Final answer
   x = 1,130.18