Finding the Fourth Proportional to 2,245.11, 3,093.89 and 1,686.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,245.11 : 3,093.89 = 1,686.21 : x
2. Step 2: Convert to fraction form
   2,245.11/3,093.89 = 1,686.21/x
3. Step 3: Cross multiply
   2,245.11x = 3,093.89 × 1,686.21
4. Step 4: Simplify right side
   2,245.11x = 5,216,939.83
5. Step 5: Solve for x
   x = 5,216,939.83/2,245.11
6. Step 6: Final answer
   x = 2,323.69