Finding the Fourth Proportional to 1,088.18, 1,501.69 and 590.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,088.18 : 1,501.69 = 590.83 : x
2. Step 2: Convert to fraction form
   1,088.18/1,501.69 = 590.83/x
3. Step 3: Cross multiply
   1,088.18x = 1,501.69 × 590.83
4. Step 4: Simplify right side
   1,088.18x = 887,247.83
5. Step 5: Solve for x
   x = 887,247.83/1,088.18
6. Step 6: Final answer
   x = 815.35