Finding the Fourth Proportional to 2,647.92, 3,968.37 and 1,002.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,647.92 : 3,968.37 = 1,002.90 : x
2. Step 2: Convert to fraction form
   2,647.92/3,968.37 = 1,002.90/x
3. Step 3: Cross multiply
   2,647.92x = 3,968.37 × 1,002.90
4. Step 4: Simplify right side
   2,647.92x = 3,979,878.27
5. Step 5: Solve for x
   x = 3,979,878.27/2,647.92
6. Step 6: Final answer
   x = 1,503.02