Finding the Fourth Proportional to 2,083.52, 2,875.21 and 1,139.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,083.52 : 2,875.21 = 1,139.32 : x
2. Step 2: Convert to fraction form
   2,083.52/2,875.21 = 1,139.32/x
3. Step 3: Cross multiply
   2,083.52x = 2,875.21 × 1,139.32
4. Step 4: Simplify right side
   2,083.52x = 3,275,774.22
5. Step 5: Solve for x
   x = 3,275,774.22/2,083.52
6. Step 6: Final answer
   x = 1,572.23