Finding the Fourth Proportional to 2,083.97, 2,875.76 and 1,139.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,083.97 : 2,875.76 = 1,139.58 : x
2. Step 2: Convert to fraction form
   2,083.97/2,875.76 = 1,139.58/x
3. Step 3: Cross multiply
   2,083.97x = 2,875.76 × 1,139.58
4. Step 4: Simplify right side
   2,083.97x = 3,277,147.05
5. Step 5: Solve for x
   x = 3,277,147.05/2,083.97
6. Step 6: Final answer
   x = 1,572.55