Finding the Fourth Proportional to 2,606.28, 3,910.59 and 1,145.85

Step by Step Solution

1. Step 1: Write the proportion equation
   2,606.28 : 3,910.59 = 1,145.85 : x
2. Step 2: Convert to fraction form
   2,606.28/3,910.59 = 1,145.85/x
3. Step 3: Cross multiply
   2,606.28x = 3,910.59 × 1,145.85
4. Step 4: Simplify right side
   2,606.28x = 4,480,949.55
5. Step 5: Solve for x
   x = 4,480,949.55/2,606.28
6. Step 6: Final answer
   x = 1,719.29