Finding the Fourth Proportional to 1,571.33, 2,168.71 and 908.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,571.33 : 2,168.71 = 908.59 : x
2. Step 2: Convert to fraction form
   1,571.33/2,168.71 = 908.59/x
3. Step 3: Cross multiply
   1,571.33x = 2,168.71 × 908.59
4. Step 4: Simplify right side
   1,571.33x = 1,970,459.63
5. Step 5: Solve for x
   x = 1,970,459.63/1,571.33
6. Step 6: Final answer
   x = 1,254.01