Finding the Fourth Proportional to 2,784.24, 3,847.32 and 2,649.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,784.24 : 3,847.32 = 2,649.28 : x
2. Step 2: Convert to fraction form
   2,784.24/3,847.32 = 2,649.28/x
3. Step 3: Cross multiply
   2,784.24x = 3,847.32 × 2,649.28
4. Step 4: Simplify right side
   2,784.24x = 10,192,627.93
5. Step 5: Solve for x
   x = 10,192,627.93/2,784.24
6. Step 6: Final answer
   x = 3,660.83