Finding the Fourth Proportional to 1,087.89, 1,501.28 and 590.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,087.89 : 1,501.28 = 590.52 : x
2. Step 2: Convert to fraction form
   1,087.89/1,501.28 = 590.52/x
3. Step 3: Cross multiply
   1,087.89x = 1,501.28 × 590.52
4. Step 4: Simplify right side
   1,087.89x = 886,539.62
5. Step 5: Solve for x
   x = 886,539.62/1,087.89
6. Step 6: Final answer
   x = 814.92