Finding the Fourth Proportional to 3,940.71, 5,906.80 and 1,746.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,940.71 : 5,906.80 = 1,746.42 : x
2. Step 2: Convert to fraction form
   3,940.71/5,906.80 = 1,746.42/x
3. Step 3: Cross multiply
   3,940.71x = 5,906.80 × 1,746.42
4. Step 4: Simplify right side
   3,940.71x = 10,315,753.66
5. Step 5: Solve for x
   x = 10,315,753.66/3,940.71
6. Step 6: Final answer
   x = 2,617.74