Finding the Fourth Proportional to 2,048.64, 3,071.72 and 748.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,048.64 : 3,071.72 = 748.58 : x
2. Step 2: Convert to fraction form
   2,048.64/3,071.72 = 748.58/x
3. Step 3: Cross multiply
   2,048.64x = 3,071.72 × 748.58
4. Step 4: Simplify right side
   2,048.64x = 2,299,428.16
5. Step 5: Solve for x
   x = 2,299,428.16/2,048.64
6. Step 6: Final answer
   x = 1,122.42