Finding the Fourth Proportional to 2,019.48, 3,028.80 and 558.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,019.48 : 3,028.80 = 558.56 : x
2. Step 2: Convert to fraction form
   2,019.48/3,028.80 = 558.56/x
3. Step 3: Cross multiply
   2,019.48x = 3,028.80 × 558.56
4. Step 4: Simplify right side
   2,019.48x = 1,691,766.53
5. Step 5: Solve for x
   x = 1,691,766.53/2,019.48
6. Step 6: Final answer
   x = 837.72