Finding the Fourth Proportional to 3,410.72, 5,115.78 and 945.35

Step by Step Solution

1. Step 1: Write the proportion equation
   3,410.72 : 5,115.78 = 945.35 : x
2. Step 2: Convert to fraction form
   3,410.72/5,115.78 = 945.35/x
3. Step 3: Cross multiply
   3,410.72x = 5,115.78 × 945.35
4. Step 4: Simplify right side
   3,410.72x = 4,836,177.04
5. Step 5: Solve for x
   x = 4,836,177.04/3,410.72
6. Step 6: Final answer
   x = 1,417.94