Finding the Fourth Proportional to 2,019.42, 3,028.14 and 909.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,019.42 : 3,028.14 = 909.18 : x
2. Step 2: Convert to fraction form
   2,019.42/3,028.14 = 909.18/x
3. Step 3: Cross multiply
   2,019.42x = 3,028.14 × 909.18
4. Step 4: Simplify right side
   2,019.42x = 2,753,124.33
5. Step 5: Solve for x
   x = 2,753,124.33/2,019.42
6. Step 6: Final answer
   x = 1,363.32