Finding the Fourth Proportional to 1,138.83, 1,707.03 and 590.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,138.83 : 1,707.03 = 590.88 : x
2. Step 2: Convert to fraction form
   1,138.83/1,707.03 = 590.88/x
3. Step 3: Cross multiply
   1,138.83x = 1,707.03 × 590.88
4. Step 4: Simplify right side
   1,138.83x = 1,008,649.89
5. Step 5: Solve for x
   x = 1,008,649.89/1,138.83
6. Step 6: Final answer
   x = 885.69