Finding the Fourth Proportional to 1,739.46, 2,399.89 and 1,031.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,739.46 : 2,399.89 = 1,031.42 : x
2. Step 2: Convert to fraction form
   1,739.46/2,399.89 = 1,031.42/x
3. Step 3: Cross multiply
   1,739.46x = 2,399.89 × 1,031.42
4. Step 4: Simplify right side
   1,739.46x = 2,475,297.97
5. Step 5: Solve for x
   x = 2,475,297.97/1,739.46
6. Step 6: Final answer
   x = 1,423.02