Finding the Fourth Proportional to 2,048.09, 3,072.82 and 815.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,048.09 : 3,072.82 = 815.18 : x
2. Step 2: Convert to fraction form
   2,048.09/3,072.82 = 815.18/x
3. Step 3: Cross multiply
   2,048.09x = 3,072.82 × 815.18
4. Step 4: Simplify right side
   2,048.09x = 2,504,884.01
5. Step 5: Solve for x
   x = 2,504,884.01/2,048.09
6. Step 6: Final answer
   x = 1,223.03