Finding the Fourth Proportional to 2,505.69, 3,456.72 and 1,621.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,505.69 : 3,456.72 = 1,621.80 : x
2. Step 2: Convert to fraction form
   2,505.69/3,456.72 = 1,621.80/x
3. Step 3: Cross multiply
   2,505.69x = 3,456.72 × 1,621.80
4. Step 4: Simplify right side
   2,505.69x = 5,606,108.50
5. Step 5: Solve for x
   x = 5,606,108.50/2,505.69
6. Step 6: Final answer
   x = 2,237.35