Finding the Fourth Proportional to 2,621.18, 3,620.04 and 1,628.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,621.18 : 3,620.04 = 1,628.81 : x
2. Step 2: Convert to fraction form
   2,621.18/3,620.04 = 1,628.81/x
3. Step 3: Cross multiply
   2,621.18x = 3,620.04 × 1,628.81
4. Step 4: Simplify right side
   2,621.18x = 5,896,357.35
5. Step 5: Solve for x
   x = 5,896,357.35/2,621.18
6. Step 6: Final answer
   x = 2,249.50