Finding the Fourth Proportional to 2,280.39, 3,147.72 and 1,336.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,280.39 : 3,147.72 = 1,336.48 : x
2. Step 2: Convert to fraction form
   2,280.39/3,147.72 = 1,336.48/x
3. Step 3: Cross multiply
   2,280.39x = 3,147.72 × 1,336.48
4. Step 4: Simplify right side
   2,280.39x = 4,206,858.14
5. Step 5: Solve for x
   x = 4,206,858.14/2,280.39
6. Step 6: Final answer
   x = 1,844.80