Finding the Fourth Proportional to 2,645.73, 3,968.46 and 697.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,645.73 : 3,968.46 = 697.86 : x
2. Step 2: Convert to fraction form
   2,645.73/3,968.46 = 697.86/x
3. Step 3: Cross multiply
   2,645.73x = 3,968.46 × 697.86
4. Step 4: Simplify right side
   2,645.73x = 2,769,429.50
5. Step 5: Solve for x
   x = 2,769,429.50/2,645.73
6. Step 6: Final answer
   x = 1,046.75