Finding the Fourth Proportional to 2,083.58, 2,875.22 and 1,139.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,083.58 : 2,875.22 = 1,139.18 : x
2. Step 2: Convert to fraction form
   2,083.58/2,875.22 = 1,139.18/x
3. Step 3: Cross multiply
   2,083.58x = 2,875.22 × 1,139.18
4. Step 4: Simplify right side
   2,083.58x = 3,275,409.40
5. Step 5: Solve for x
   x = 3,275,409.40/2,083.58
6. Step 6: Final answer
   x = 1,572.01