Finding the Fourth Proportional to 1,003.09, 1,502.56 and 590.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,003.09 : 1,502.56 = 590.96 : x
2. Step 2: Convert to fraction form
   1,003.09/1,502.56 = 590.96/x
3. Step 3: Cross multiply
   1,003.09x = 1,502.56 × 590.96
4. Step 4: Simplify right side
   1,003.09x = 887,952.86
5. Step 5: Solve for x
   x = 887,952.86/1,003.09
6. Step 6: Final answer
   x = 885.22