Finding the Fourth Proportional to 1,367.89, 2,048.19 and 819.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,367.89 : 2,048.19 = 819.32 : x
2. Step 2: Convert to fraction form
   1,367.89/2,048.19 = 819.32/x
3. Step 3: Cross multiply
   1,367.89x = 2,048.19 × 819.32
4. Step 4: Simplify right side
   1,367.89x = 1,678,109.72
5. Step 5: Solve for x
   x = 1,678,109.72/1,367.89
6. Step 6: Final answer
   x = 1,226.79