Finding the Fourth Proportional to 3,651.39, 5,039.28 and 2,079.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,651.39 : 5,039.28 = 2,079.72 : x
2. Step 2: Convert to fraction form
   3,651.39/5,039.28 = 2,079.72/x
3. Step 3: Cross multiply
   3,651.39x = 5,039.28 × 2,079.72
4. Step 4: Simplify right side
   3,651.39x = 10,480,291.40
5. Step 5: Solve for x
   x = 10,480,291.40/3,651.39
6. Step 6: Final answer
   x = 2,870.22