Finding the Fourth Proportional to 1,448.86, 1,999.26 and 819.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,448.86 : 1,999.26 = 819.34 : x
2. Step 2: Convert to fraction form
   1,448.86/1,999.26 = 819.34/x
3. Step 3: Cross multiply
   1,448.86x = 1,999.26 × 819.34
4. Step 4: Simplify right side
   1,448.86x = 1,638,073.69
5. Step 5: Solve for x
   x = 1,638,073.69/1,448.86
6. Step 6: Final answer
   x = 1,130.59