Finding the Fourth Proportional to 2,245.82, 3,368.76 and 685.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,245.82 : 3,368.76 = 685.82 : x
2. Step 2: Convert to fraction form
   2,245.82/3,368.76 = 685.82/x
3. Step 3: Cross multiply
   2,245.82x = 3,368.76 × 685.82
4. Step 4: Simplify right side
   2,245.82x = 2,310,362.98
5. Step 5: Solve for x
   x = 2,310,362.98/2,245.82
6. Step 6: Final answer
   x = 1,028.74