Finding the Fourth Proportional to 2,480.69, 3,721.13 and 749.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,480.69 : 3,721.13 = 749.31 : x
2. Step 2: Convert to fraction form
   2,480.69/3,721.13 = 749.31/x
3. Step 3: Cross multiply
   2,480.69x = 3,721.13 × 749.31
4. Step 4: Simplify right side
   2,480.69x = 2,788,279.92
5. Step 5: Solve for x
   x = 2,788,279.92/2,480.69
6. Step 6: Final answer
   x = 1,123.99