Finding the Fourth Proportional to 2,048.12, 3,072.38 and 749.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,048.12 : 3,072.38 = 749.28 : x
2. Step 2: Convert to fraction form
   2,048.12/3,072.38 = 749.28/x
3. Step 3: Cross multiply
   2,048.12x = 3,072.38 × 749.28
4. Step 4: Simplify right side
   2,048.12x = 2,302,072.89
5. Step 5: Solve for x
   x = 2,302,072.89/2,048.12
6. Step 6: Final answer
   x = 1,123.99