Finding the Fourth Proportional to 2,083.45, 2,875.22 and 1,139.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,083.45 : 2,875.22 = 1,139.32 : x
2. Step 2: Convert to fraction form
   2,083.45/2,875.22 = 1,139.32/x
3. Step 3: Cross multiply
   2,083.45x = 2,875.22 × 1,139.32
4. Step 4: Simplify right side
   2,083.45x = 3,275,795.65
5. Step 5: Solve for x
   x = 3,275,795.65/2,083.45
6. Step 6: Final answer
   x = 1,572.29