Finding the Fourth Proportional to 2,185.20, 3,273.23 and 1,636.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,185.20 : 3,273.23 = 1,636.63 : x
2. Step 2: Convert to fraction form
   2,185.20/3,273.23 = 1,636.63/x
3. Step 3: Cross multiply
   2,185.20x = 3,273.23 × 1,636.63
4. Step 4: Simplify right side
   2,185.20x = 5,357,062.32
5. Step 5: Solve for x
   x = 5,357,062.32/2,185.20
6. Step 6: Final answer
   x = 2,451.52