Finding the Fourth Proportional to 2,280.51, 3,147.89 and 1,336.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,280.51 : 3,147.89 = 1,336.61 : x
2. Step 2: Convert to fraction form
   2,280.51/3,147.89 = 1,336.61/x
3. Step 3: Cross multiply
   2,280.51x = 3,147.89 × 1,336.61
4. Step 4: Simplify right side
   2,280.51x = 4,207,478.83
5. Step 5: Solve for x
   x = 4,207,478.83/2,280.51
6. Step 6: Final answer
   x = 1,844.97