Finding the Fourth Proportional to 2,019.92, 3,028.64 and 1,142.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,019.92 : 3,028.64 = 1,142.04 : x
2. Step 2: Convert to fraction form
   2,019.92/3,028.64 = 1,142.04/x
3. Step 3: Cross multiply
   2,019.92x = 3,028.64 × 1,142.04
4. Step 4: Simplify right side
   2,019.92x = 3,458,828.03
5. Step 5: Solve for x
   x = 3,458,828.03/2,019.92
6. Step 6: Final answer
   x = 1,712.36