Finding the Fourth Proportional to 2,180.94, 3,009.78 and 1,249.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,180.94 : 3,009.78 = 1,249.62 : x
2. Step 2: Convert to fraction form
   2,180.94/3,009.78 = 1,249.62/x
3. Step 3: Cross multiply
   2,180.94x = 3,009.78 × 1,249.62
4. Step 4: Simplify right side
   2,180.94x = 3,761,081.28
5. Step 5: Solve for x
   x = 3,761,081.28/2,180.94
6. Step 6: Final answer
   x = 1,724.52