Finding the Fourth Proportional to 2,607.87, 3,910.73 and 965.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,607.87 : 3,910.73 = 965.73 : x
2. Step 2: Convert to fraction form
   2,607.87/3,910.73 = 965.73/x
3. Step 3: Cross multiply
   2,607.87x = 3,910.73 × 965.73
4. Step 4: Simplify right side
   2,607.87x = 3,776,704.45
5. Step 5: Solve for x
   x = 3,776,704.45/2,607.87
6. Step 6: Final answer
   x = 1,448.20