Finding the Fourth Proportional to 1,139.22, 1,707.30 and 590.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,139.22 : 1,707.30 = 590.25 : x
2. Step 2: Convert to fraction form
   1,139.22/1,707.30 = 590.25/x
3. Step 3: Cross multiply
   1,139.22x = 1,707.30 × 590.25
4. Step 4: Simplify right side
   1,139.22x = 1,007,733.83
5. Step 5: Solve for x
   x = 1,007,733.83/1,139.22
6. Step 6: Final answer
   x = 884.58