Finding the Fourth Proportional to 2,506.67, 3,456.96 and 1,621.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,506.67 : 3,456.96 = 1,621.55 : x
2. Step 2: Convert to fraction form
   2,506.67/3,456.96 = 1,621.55/x
3. Step 3: Cross multiply
   2,506.67x = 3,456.96 × 1,621.55
4. Step 4: Simplify right side
   2,506.67x = 5,605,633.49
5. Step 5: Solve for x
   x = 5,605,633.49/2,506.67
6. Step 6: Final answer
   x = 2,236.29