Finding the Fourth Proportional to 1,644.38, 2,267.54 and 1,271.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,644.38 : 2,267.54 = 1,271.42 : x
2. Step 2: Convert to fraction form
   1,644.38/2,267.54 = 1,271.42/x
3. Step 3: Cross multiply
   1,644.38x = 2,267.54 × 1,271.42
4. Step 4: Simplify right side
   1,644.38x = 2,882,995.71
5. Step 5: Solve for x
   x = 2,882,995.71/1,644.38
6. Step 6: Final answer
   x = 1,753.24