Finding the Fourth Proportional to 1,087.98, 1,501.42 and 590.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,087.98 : 1,501.42 = 590.62 : x
2. Step 2: Convert to fraction form
   1,087.98/1,501.42 = 590.62/x
3. Step 3: Cross multiply
   1,087.98x = 1,501.42 × 590.62
4. Step 4: Simplify right side
   1,087.98x = 886,768.68
5. Step 5: Solve for x
   x = 886,768.68/1,087.98
6. Step 6: Final answer
   x = 815.06