Finding the Fourth Proportional to 2,209.36, 3,314.52 and 748.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,209.36 : 3,314.52 = 748.72 : x
2. Step 2: Convert to fraction form
   2,209.36/3,314.52 = 748.72/x
3. Step 3: Cross multiply
   2,209.36x = 3,314.52 × 748.72
4. Step 4: Simplify right side
   2,209.36x = 2,481,647.41
5. Step 5: Solve for x
   x = 2,481,647.41/2,209.36
6. Step 6: Final answer
   x = 1,123.24