Finding the Fourth Proportional to 2,616.22, 3,609.09 and 1,553.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,616.22 : 3,609.09 = 1,553.50 : x
2. Step 2: Convert to fraction form
   2,616.22/3,609.09 = 1,553.50/x
3. Step 3: Cross multiply
   2,616.22x = 3,609.09 × 1,553.50
4. Step 4: Simplify right side
   2,616.22x = 5,606,721.32
5. Step 5: Solve for x
   x = 5,606,721.32/2,616.22
6. Step 6: Final answer
   x = 2,143.06