Finding the Fourth Proportional to 1,929.12, 2,662.17 and 1,143.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,929.12 : 2,662.17 = 1,143.54 : x
2. Step 2: Convert to fraction form
   1,929.12/2,662.17 = 1,143.54/x
3. Step 3: Cross multiply
   1,929.12x = 2,662.17 × 1,143.54
4. Step 4: Simplify right side
   1,929.12x = 3,044,297.88
5. Step 5: Solve for x
   x = 3,044,297.88/1,929.12
6. Step 6: Final answer
   x = 1,578.08