Finding the Fourth Proportional to 2,388.61, 3,296.36 and 1,340.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,388.61 : 3,296.36 = 1,340.71 : x
2. Step 2: Convert to fraction form
   2,388.61/3,296.36 = 1,340.71/x
3. Step 3: Cross multiply
   2,388.61x = 3,296.36 × 1,340.71
4. Step 4: Simplify right side
   2,388.61x = 4,419,462.82
5. Step 5: Solve for x
   x = 4,419,462.82/2,388.61
6. Step 6: Final answer
   x = 1,850.22