Finding the Fourth Proportional to 2,436.21, 3,654.55 and 681.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,436.21 : 3,654.55 = 681.22 : x
2. Step 2: Convert to fraction form
   2,436.21/3,654.55 = 681.22/x
3. Step 3: Cross multiply
   2,436.21x = 3,654.55 × 681.22
4. Step 4: Simplify right side
   2,436.21x = 2,489,536.83
5. Step 5: Solve for x
   x = 2,489,536.83/2,436.21
6. Step 6: Final answer
   x = 1,021.89