Finding the Fourth Proportional to 2,083.32, 2,874.89 and 1,139.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,083.32 : 2,874.89 = 1,139.09 : x
2. Step 2: Convert to fraction form
   2,083.32/2,874.89 = 1,139.09/x
3. Step 3: Cross multiply
   2,083.32x = 2,874.89 × 1,139.09
4. Step 4: Simplify right side
   2,083.32x = 3,274,755.01
5. Step 5: Solve for x
   x = 3,274,755.01/2,083.32
6. Step 6: Final answer
   x = 1,571.89