Finding the Fourth Proportional to 2,480.72, 3,721.40 and 1,019.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,480.72 : 3,721.40 = 1,019.76 : x
2. Step 2: Convert to fraction form
   2,480.72/3,721.40 = 1,019.76/x
3. Step 3: Cross multiply
   2,480.72x = 3,721.40 × 1,019.76
4. Step 4: Simplify right side
   2,480.72x = 3,794,934.86
5. Step 5: Solve for x
   x = 3,794,934.86/2,480.72
6. Step 6: Final answer
   x = 1,529.77