Finding the Fourth Proportional to 2,039.49, 2,813.82 and 1,143.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,039.49 : 2,813.82 = 1,143.09 : x
2. Step 2: Convert to fraction form
   2,039.49/2,813.82 = 1,143.09/x
3. Step 3: Cross multiply
   2,039.49x = 2,813.82 × 1,143.09
4. Step 4: Simplify right side
   2,039.49x = 3,216,460.06
5. Step 5: Solve for x
   x = 3,216,460.06/2,039.49
6. Step 6: Final answer
   x = 1,577.09