Finding the Fourth Proportional to 1,571.27, 2,357.78 and 738.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,571.27 : 2,357.78 = 738.18 : x
2. Step 2: Convert to fraction form
   1,571.27/2,357.78 = 738.18/x
3. Step 3: Cross multiply
   1,571.27x = 2,357.78 × 738.18
4. Step 4: Simplify right side
   1,571.27x = 1,740,462.35
5. Step 5: Solve for x
   x = 1,740,462.35/1,571.27
6. Step 6: Final answer
   x = 1,107.68