Finding the Fourth Proportional to 3,105.30, 4,658.37 and 913.71

Step by Step Solution

1. Step 1: Write the proportion equation
   3,105.30 : 4,658.37 = 913.71 : x
2. Step 2: Convert to fraction form
   3,105.30/4,658.37 = 913.71/x
3. Step 3: Cross multiply
   3,105.30x = 4,658.37 × 913.71
4. Step 4: Simplify right side
   3,105.30x = 4,256,399.25
5. Step 5: Solve for x
   x = 4,256,399.25/3,105.30
6. Step 6: Final answer
   x = 1,370.69