Finding the Fourth Proportional to 2,241.72, 3,362.61 and 855.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,241.72 : 3,362.61 = 855.69 : x
2. Step 2: Convert to fraction form
   2,241.72/3,362.61 = 855.69/x
3. Step 3: Cross multiply
   2,241.72x = 3,362.61 × 855.69
4. Step 4: Simplify right side
   2,241.72x = 2,877,351.75
5. Step 5: Solve for x
   x = 2,877,351.75/2,241.72
6. Step 6: Final answer
   x = 1,283.55