Finding the Fourth Proportional to 2,245.32, 3,368.59 and 685.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,245.32 : 3,368.59 = 685.46 : x
2. Step 2: Convert to fraction form
   2,245.32/3,368.59 = 685.46/x
3. Step 3: Cross multiply
   2,245.32x = 3,368.59 × 685.46
4. Step 4: Simplify right side
   2,245.32x = 2,309,040.41
5. Step 5: Solve for x
   x = 2,309,040.41/2,245.32
6. Step 6: Final answer
   x = 1,028.38