Finding the Fourth Proportional to 1,088.18, 1,501.67 and 590.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,088.18 : 1,501.67 = 590.82 : x
2. Step 2: Convert to fraction form
   1,088.18/1,501.67 = 590.82/x
3. Step 3: Cross multiply
   1,088.18x = 1,501.67 × 590.82
4. Step 4: Simplify right side
   1,088.18x = 887,216.67
5. Step 5: Solve for x
   x = 887,216.67/1,088.18
6. Step 6: Final answer
   x = 815.32