Finding the Fourth Proportional to 2,048.28, 3,072.12 and 1,123.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,048.28 : 3,072.12 = 1,123.52 : x
2. Step 2: Convert to fraction form
   2,048.28/3,072.12 = 1,123.52/x
3. Step 3: Cross multiply
   2,048.28x = 3,072.12 × 1,123.52
4. Step 4: Simplify right side
   2,048.28x = 3,451,588.26
5. Step 5: Solve for x
   x = 3,451,588.26/2,048.28
6. Step 6: Final answer
   x = 1,685.12