Finding the Fourth Proportional to 2,647.26, 3,968.46 and 1,415.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,647.26 : 3,968.46 = 1,415.52 : x
2. Step 2: Convert to fraction form
   2,647.26/3,968.46 = 1,415.52/x
3. Step 3: Cross multiply
   2,647.26x = 3,968.46 × 1,415.52
4. Step 4: Simplify right side
   2,647.26x = 5,617,434.50
5. Step 5: Solve for x
   x = 5,617,434.50/2,647.26
6. Step 6: Final answer
   x = 2,121.98