Finding the Fourth Proportional to 2,308.05, 3,185.39 and 1,563.66

Step by Step Solution

1. Step 1: Write the proportion equation
   2,308.05 : 3,185.39 = 1,563.66 : x
2. Step 2: Convert to fraction form
   2,308.05/3,185.39 = 1,563.66/x
3. Step 3: Cross multiply
   2,308.05x = 3,185.39 × 1,563.66
4. Step 4: Simplify right side
   2,308.05x = 4,980,866.93
5. Step 5: Solve for x
   x = 4,980,866.93/2,308.05
6. Step 6: Final answer
   x = 2,158.04