Finding the Fourth Proportional to 2,388.68, 3,296.52 and 1,340.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,388.68 : 3,296.52 = 1,340.72 : x
2. Step 2: Convert to fraction form
   2,388.68/3,296.52 = 1,340.72/x
3. Step 3: Cross multiply
   2,388.68x = 3,296.52 × 1,340.72
4. Step 4: Simplify right side
   2,388.68x = 4,419,710.29
5. Step 5: Solve for x
   x = 4,419,710.29/2,388.68
6. Step 6: Final answer
   x = 1,850.27