Finding the Fourth Proportional to 1,665.47, 2,298.31 and 957.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.47 : 2,298.31 = 957.32 : x
2. Step 2: Convert to fraction form
   1,665.47/2,298.31 = 957.32/x
3. Step 3: Cross multiply
   1,665.47x = 2,298.31 × 957.32
4. Step 4: Simplify right side
   1,665.47x = 2,200,218.13
5. Step 5: Solve for x
   x = 2,200,218.13/1,665.47
6. Step 6: Final answer
   x = 1,321.08