Finding the Fourth Proportional to 1,929.36, 2,662.56 and 1,143.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,929.36 : 2,662.56 = 1,143.12 : x
2. Step 2: Convert to fraction form
   1,929.36/2,662.56 = 1,143.12/x
3. Step 3: Cross multiply
   1,929.36x = 2,662.56 × 1,143.12
4. Step 4: Simplify right side
   1,929.36x = 3,043,625.59
5. Step 5: Solve for x
   x = 3,043,625.59/1,929.36
6. Step 6: Final answer
   x = 1,577.53