Finding the Fourth Proportional to 2,480.55, 3,718.13 and 1,019.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,480.55 : 3,718.13 = 1,019.31 : x
2. Step 2: Convert to fraction form
   2,480.55/3,718.13 = 1,019.31/x
3. Step 3: Cross multiply
   2,480.55x = 3,718.13 × 1,019.31
4. Step 4: Simplify right side
   2,480.55x = 3,789,921.99
5. Step 5: Solve for x
   x = 3,789,921.99/2,480.55
6. Step 6: Final answer
   x = 1,527.86