Finding the Fourth Proportional to 2,256.30, 3,385.71 and 957.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,256.30 : 3,385.71 = 957.42 : x
2. Step 2: Convert to fraction form
   2,256.30/3,385.71 = 957.42/x
3. Step 3: Cross multiply
   2,256.30x = 3,385.71 × 957.42
4. Step 4: Simplify right side
   2,256.30x = 3,241,546.47
5. Step 5: Solve for x
   x = 3,241,546.47/2,256.30
6. Step 6: Final answer
   x = 1,436.66