Finding the Fourth Proportional to 2,388.56, 3,296.68 and 1,340.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,388.56 : 3,296.68 = 1,340.56 : x
2. Step 2: Convert to fraction form
   2,388.56/3,296.68 = 1,340.56/x
3. Step 3: Cross multiply
   2,388.56x = 3,296.68 × 1,340.56
4. Step 4: Simplify right side
   2,388.56x = 4,419,397.34
5. Step 5: Solve for x
   x = 4,419,397.34/2,388.56
6. Step 6: Final answer
   x = 1,850.24