Finding the Fourth Proportional to 1,965.48, 2,711.52 and 1,665.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,965.48 : 2,711.52 = 1,665.45 : x
2. Step 2: Convert to fraction form
   1,965.48/2,711.52 = 1,665.45/x
3. Step 3: Cross multiply
   1,965.48x = 2,711.52 × 1,665.45
4. Step 4: Simplify right side
   1,965.48x = 4,515,900.98
5. Step 5: Solve for x
   x = 4,515,900.98/1,965.48
6. Step 6: Final answer
   x = 2,297.61