Finding the Fourth Proportional to 1,665.39, 2,297.97 and 957.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.39 : 2,297.97 = 957.27 : x
2. Step 2: Convert to fraction form
   1,665.39/2,297.97 = 957.27/x
3. Step 3: Cross multiply
   1,665.39x = 2,297.97 × 957.27
4. Step 4: Simplify right side
   1,665.39x = 2,199,773.43
5. Step 5: Solve for x
   x = 2,199,773.43/1,665.39
6. Step 6: Final answer
   x = 1,320.88