Finding the Fourth Proportional to 2,289.62, 3,404.98 and 2,216.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,289.62 : 3,404.98 = 2,216.72 : x
2. Step 2: Convert to fraction form
   2,289.62/3,404.98 = 2,216.72/x
3. Step 3: Cross multiply
   2,289.62x = 3,404.98 × 2,216.72
4. Step 4: Simplify right side
   2,289.62x = 7,547,887.27
5. Step 5: Solve for x
   x = 7,547,887.27/2,289.62
6. Step 6: Final answer
   x = 3,296.57