Finding the Fourth Proportional to 2,515.50, 3,472.64 and 1,571.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,515.50 : 3,472.64 = 1,571.82 : x
2. Step 2: Convert to fraction form
   2,515.50/3,472.64 = 1,571.82/x
3. Step 3: Cross multiply
   2,515.50x = 3,472.64 × 1,571.82
4. Step 4: Simplify right side
   2,515.50x = 5,458,365.37
5. Step 5: Solve for x
   x = 5,458,365.37/2,515.50
6. Step 6: Final answer
   x = 2,169.89