Finding the Fourth Proportional to 2,682.72, 3,688.74 and 2,289.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,682.72 : 3,688.74 = 2,289.06 : x
2. Step 2: Convert to fraction form
   2,682.72/3,688.74 = 2,289.06/x
3. Step 3: Cross multiply
   2,682.72x = 3,688.74 × 2,289.06
4. Step 4: Simplify right side
   2,682.72x = 8,443,747.18
5. Step 5: Solve for x
   x = 8,443,747.18/2,682.72
6. Step 6: Final answer
   x = 3,147.46