Finding the Fourth Proportional to 2,180.73, 3,009.36 and 1,284.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,180.73 : 3,009.36 = 1,284.56 : x
2. Step 2: Convert to fraction form
   2,180.73/3,009.36 = 1,284.56/x
3. Step 3: Cross multiply
   2,180.73x = 3,009.36 × 1,284.56
4. Step 4: Simplify right side
   2,180.73x = 3,865,711.01
5. Step 5: Solve for x
   x = 3,865,711.01/2,180.73
6. Step 6: Final answer
   x = 1,772.67