Finding the Fourth Proportional to 2,471.98, 3,410.30 and 1,621

Step by Step Solution

1. Step 1: Write the proportion equation
   2,471.98 : 3,410.30 = 1,621 : x
2. Step 2: Convert to fraction form
   2,471.98/3,410.30 = 1,621/x
3. Step 3: Cross multiply
   2,471.98x = 3,410.30 × 1,621
4. Step 4: Simplify right side
   2,471.98x = 5,528,096.30
5. Step 5: Solve for x
   x = 5,528,096.30/2,471.98
6. Step 6: Final answer
   x = 2,236.30