Finding the Fourth Proportional to 1,717.72, 2,574.42 and 1,231.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,717.72 : 2,574.42 = 1,231.72 : x
2. Step 2: Convert to fraction form
   1,717.72/2,574.42 = 1,231.72/x
3. Step 3: Cross multiply
   1,717.72x = 2,574.42 × 1,231.72
4. Step 4: Simplify right side
   1,717.72x = 3,170,964.60
5. Step 5: Solve for x
   x = 3,170,964.60/1,717.72
6. Step 6: Final answer
   x = 1,846.03