Finding the Fourth Proportional to 1,655.89, 2,284.99 and 957.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,655.89 : 2,284.99 = 957.31 : x
2. Step 2: Convert to fraction form
   1,655.89/2,284.99 = 957.31/x
3. Step 3: Cross multiply
   1,655.89x = 2,284.99 × 957.31
4. Step 4: Simplify right side
   1,655.89x = 2,187,443.78
5. Step 5: Solve for x
   x = 2,187,443.78/1,655.89
6. Step 6: Final answer
   x = 1,321.01