Finding the Fourth Proportional to 2,388.40, 3,295.72 and 1,340.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,388.40 : 3,295.72 = 1,340.24 : x
2. Step 2: Convert to fraction form
   2,388.40/3,295.72 = 1,340.24/x
3. Step 3: Cross multiply
   2,388.40x = 3,295.72 × 1,340.24
4. Step 4: Simplify right side
   2,388.40x = 4,417,055.77
5. Step 5: Solve for x
   x = 4,417,055.77/2,388.40
6. Step 6: Final answer
   x = 1,849.38