Finding the Fourth Proportional to 1,139.28, 1,707.37 and 582.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,139.28 : 1,707.37 = 582.82 : x
2. Step 2: Convert to fraction form
   1,139.28/1,707.37 = 582.82/x
3. Step 3: Cross multiply
   1,139.28x = 1,707.37 × 582.82
4. Step 4: Simplify right side
   1,139.28x = 995,091.46
5. Step 5: Solve for x
   x = 995,091.46/1,139.28
6. Step 6: Final answer
   x = 873.44