Finding the Fourth Proportional to 2,619.76, 3,615.06 and 1,571.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,619.76 : 3,615.06 = 1,571.62 : x
2. Step 2: Convert to fraction form
   2,619.76/3,615.06 = 1,571.62/x
3. Step 3: Cross multiply
   2,619.76x = 3,615.06 × 1,571.62
4. Step 4: Simplify right side
   2,619.76x = 5,681,500.60
5. Step 5: Solve for x
   x = 5,681,500.60/2,619.76
6. Step 6: Final answer
   x = 2,168.71