Finding the Fourth Proportional to 3,074.58, 4,215.33 and 3,019.28

Step by Step Solution

1. Step 1: Write the proportion equation
   3,074.58 : 4,215.33 = 3,019.28 : x
2. Step 2: Convert to fraction form
   3,074.58/4,215.33 = 3,019.28/x
3. Step 3: Cross multiply
   3,074.58x = 4,215.33 × 3,019.28
4. Step 4: Simplify right side
   3,074.58x = 12,727,240.49
5. Step 5: Solve for x
   x = 12,727,240.49/3,074.58
6. Step 6: Final answer
   x = 4,139.51