Finding the Fourth Proportional to 2,240.78, 3,361.17 and 1,087.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,240.78 : 3,361.17 = 1,087.34 : x
2. Step 2: Convert to fraction form
   2,240.78/3,361.17 = 1,087.34/x
3. Step 3: Cross multiply
   2,240.78x = 3,361.17 × 1,087.34
4. Step 4: Simplify right side
   2,240.78x = 3,654,717.78
5. Step 5: Solve for x
   x = 3,654,717.78/2,240.78
6. Step 6: Final answer
   x = 1,631.01