Finding the Fourth Proportional to 1,571.83, 2,169.39 and 908.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,571.83 : 2,169.39 = 908.56 : x
2. Step 2: Convert to fraction form
   1,571.83/2,169.39 = 908.56/x
3. Step 3: Cross multiply
   1,571.83x = 2,169.39 × 908.56
4. Step 4: Simplify right side
   1,571.83x = 1,971,020.98
5. Step 5: Solve for x
   x = 1,971,020.98/1,571.83
6. Step 6: Final answer
   x = 1,253.97