Finding the Fourth Proportional to 2,616.06, 3,610.30 and 1,621.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,616.06 : 3,610.30 = 1,621.86 : x
2. Step 2: Convert to fraction form
   2,616.06/3,610.30 = 1,621.86/x
3. Step 3: Cross multiply
   2,616.06x = 3,610.30 × 1,621.86
4. Step 4: Simplify right side
   2,616.06x = 5,855,401.16
5. Step 5: Solve for x
   x = 5,855,401.16/2,616.06
6. Step 6: Final answer
   x = 2,238.25