Finding the Fourth Proportional to 1,293.72, 1,785.72 and 1,227.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,293.72 : 1,785.72 = 1,227.61 : x
2. Step 2: Convert to fraction form
   1,293.72/1,785.72 = 1,227.61/x
3. Step 3: Cross multiply
   1,293.72x = 1,785.72 × 1,227.61
4. Step 4: Simplify right side
   1,293.72x = 2,192,161.07
5. Step 5: Solve for x
   x = 2,192,161.07/1,293.72
6. Step 6: Final answer
   x = 1,694.46