Finding the Fourth Proportional to 2,280.72, 3,147.56 and 1,336.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,280.72 : 3,147.56 = 1,336.56 : x
2. Step 2: Convert to fraction form
   2,280.72/3,147.56 = 1,336.56/x
3. Step 3: Cross multiply
   2,280.72x = 3,147.56 × 1,336.56
4. Step 4: Simplify right side
   2,280.72x = 4,206,902.79
5. Step 5: Solve for x
   x = 4,206,902.79/2,280.72
6. Step 6: Final answer
   x = 1,844.55