Finding the Fourth Proportional to 1,621.71, 2,238.71 and 1,062.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,621.71 : 2,238.71 = 1,062.20 : x
2. Step 2: Convert to fraction form
   1,621.71/2,238.71 = 1,062.20/x
3. Step 3: Cross multiply
   1,621.71x = 2,238.71 × 1,062.20
4. Step 4: Simplify right side
   1,621.71x = 2,377,958.05
5. Step 5: Solve for x
   x = 2,377,958.05/1,621.71
6. Step 6: Final answer
   x = 1,466.33