Finding the Fourth Proportional to 2,345.56, 3,515.58 and 957.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,345.56 : 3,515.58 = 957.31 : x
2. Step 2: Convert to fraction form
   2,345.56/3,515.58 = 957.31/x
3. Step 3: Cross multiply
   2,345.56x = 3,515.58 × 957.31
4. Step 4: Simplify right side
   2,345.56x = 3,365,491.10
5. Step 5: Solve for x
   x = 3,365,491.10/2,345.56
6. Step 6: Final answer
   x = 1,434.84