Finding the Fourth Proportional to 2,402.39, 3,315.21 and 1,340.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,402.39 : 3,315.21 = 1,340.10 : x
2. Step 2: Convert to fraction form
   2,402.39/3,315.21 = 1,340.10/x
3. Step 3: Cross multiply
   2,402.39x = 3,315.21 × 1,340.10
4. Step 4: Simplify right side
   2,402.39x = 4,442,712.92
5. Step 5: Solve for x
   x = 4,442,712.92/2,402.39
6. Step 6: Final answer
   x = 1,849.29