Finding the Fourth Proportional to 2,086.24, 3,129.82 and 605.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086.24 : 3,129.82 = 605.48 : x
2. Step 2: Convert to fraction form
   2,086.24/3,129.82 = 605.48/x
3. Step 3: Cross multiply
   2,086.24x = 3,129.82 × 605.48
4. Step 4: Simplify right side
   2,086.24x = 1,895,051.34
5. Step 5: Solve for x
   x = 1,895,051.34/2,086.24
6. Step 6: Final answer
   x = 908.36