Finding the Fourth Proportional to 2,083.55, 2,875.14 and 1,139.13

Step by Step Solution

1. Step 1: Write the proportion equation
   2,083.55 : 2,875.14 = 1,139.13 : x
2. Step 2: Convert to fraction form
   2,083.55/2,875.14 = 1,139.13/x
3. Step 3: Cross multiply
   2,083.55x = 2,875.14 × 1,139.13
4. Step 4: Simplify right side
   2,083.55x = 3,275,158.23
5. Step 5: Solve for x
   x = 3,275,158.23/2,083.55
6. Step 6: Final answer
   x = 1,571.92