Finding the Fourth Proportional to 2,505.62, 3,456.59 and 1,621.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,505.62 : 3,456.59 = 1,621.71 : x
2. Step 2: Convert to fraction form
   2,505.62/3,456.59 = 1,621.71/x
3. Step 3: Cross multiply
   2,505.62x = 3,456.59 × 1,621.71
4. Step 4: Simplify right side
   2,505.62x = 5,605,578.46
5. Step 5: Solve for x
   x = 5,605,578.46/2,505.62
6. Step 6: Final answer
   x = 2,237.21