Finding the Fourth Proportional to 1,395.27, 2,080.73 and 1,222.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,395.27 : 2,080.73 = 1,222.74 : x
2. Step 2: Convert to fraction form
   1,395.27/2,080.73 = 1,222.74/x
3. Step 3: Cross multiply
   1,395.27x = 2,080.73 × 1,222.74
4. Step 4: Simplify right side
   1,395.27x = 2,544,185.69
5. Step 5: Solve for x
   x = 2,544,185.69/1,395.27
6. Step 6: Final answer
   x = 1,823.44