Finding the Fourth Proportional to 1,665.39, 2,298.31 and 957.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.39 : 2,298.31 = 957.46 : x
2. Step 2: Convert to fraction form
   1,665.39/2,298.31 = 957.46/x
3. Step 3: Cross multiply
   1,665.39x = 2,298.31 × 957.46
4. Step 4: Simplify right side
   1,665.39x = 2,200,537.86
5. Step 5: Solve for x
   x = 2,200,537.86/1,665.39
6. Step 6: Final answer
   x = 1,321.34