Finding the Fourth Proportional to 2,974.72, 4,105.20 and 1,715.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,974.72 : 4,105.20 = 1,715.68 : x
2. Step 2: Convert to fraction form
   2,974.72/4,105.20 = 1,715.68/x
3. Step 3: Cross multiply
   2,974.72x = 4,105.20 × 1,715.68
4. Step 4: Simplify right side
   2,974.72x = 7,043,209.54
5. Step 5: Solve for x
   x = 7,043,209.54/2,974.72
6. Step 6: Final answer
   x = 2,367.69