Finding the Fourth Proportional to 2,256.72, 3,385.80 and 958.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,256.72 : 3,385.80 = 958.20 : x
2. Step 2: Convert to fraction form
   2,256.72/3,385.80 = 958.20/x
3. Step 3: Cross multiply
   2,256.72x = 3,385.80 × 958.20
4. Step 4: Simplify right side
   2,256.72x = 3,244,273.56
5. Step 5: Solve for x
   x = 3,244,273.56/2,256.72
6. Step 6: Final answer
   x = 1,437.61