Finding the Fourth Proportional to 2,399.70, 3,308.72 and 1,560.14

Step by Step Solution

1. Step 1: Write the proportion equation
   2,399.70 : 3,308.72 = 1,560.14 : x
2. Step 2: Convert to fraction form
   2,399.70/3,308.72 = 1,560.14/x
3. Step 3: Cross multiply
   2,399.70x = 3,308.72 × 1,560.14
4. Step 4: Simplify right side
   2,399.70x = 5,162,066.42
5. Step 5: Solve for x
   x = 5,162,066.42/2,399.70
6. Step 6: Final answer
   x = 2,151.13