Finding the Fourth Proportional to 1,087.86, 1,501.25 and 590.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,087.86 : 1,501.25 = 590.50 : x
2. Step 2: Convert to fraction form
   1,087.86/1,501.25 = 590.50/x
3. Step 3: Cross multiply
   1,087.86x = 1,501.25 × 590.50
4. Step 4: Simplify right side
   1,087.86x = 886,480.49
5. Step 5: Solve for x
   x = 886,480.49/1,087.86
6. Step 6: Final answer
   x = 814.88