Finding the Fourth Proportional to 3,992.78, 5,510.04 and 2,224.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,992.78 : 5,510.04 = 2,224.50 : x
2. Step 2: Convert to fraction form
   3,992.78/5,510.04 = 2,224.50/x
3. Step 3: Cross multiply
   3,992.78x = 5,510.04 × 2,224.50
4. Step 4: Simplify right side
   3,992.78x = 12,257,083.98
5. Step 5: Solve for x
   x = 12,257,083.98/3,992.78
6. Step 6: Final answer
   x = 3,069.81