Finding the Fourth Proportional to 2,185.56, 3,270.21 and 1,308.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,185.56 : 3,270.21 = 1,308.54 : x
2. Step 2: Convert to fraction form
   2,185.56/3,270.21 = 1,308.54/x
3. Step 3: Cross multiply
   2,185.56x = 3,270.21 × 1,308.54
4. Step 4: Simplify right side
   2,185.56x = 4,279,200.59
5. Step 5: Solve for x
   x = 4,279,200.59/2,185.56
6. Step 6: Final answer
   x = 1,957.94