Finding the Fourth Proportional to 2,621.43, 3,619.22 and 1,628.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,621.43 : 3,619.22 = 1,628.15 : x
2. Step 2: Convert to fraction form
   2,621.43/3,619.22 = 1,628.15/x
3. Step 3: Cross multiply
   2,621.43x = 3,619.22 × 1,628.15
4. Step 4: Simplify right side
   2,621.43x = 5,892,606.81
5. Step 5: Solve for x
   x = 5,892,606.81/2,621.43
6. Step 6: Final answer
   x = 2,247.86