Finding the Fourth Proportional to 2,402.48, 3,315.42 and 1,340.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,402.48 : 3,315.42 = 1,340.21 : x
2. Step 2: Convert to fraction form
   2,402.48/3,315.42 = 1,340.21/x
3. Step 3: Cross multiply
   2,402.48x = 3,315.42 × 1,340.21
4. Step 4: Simplify right side
   2,402.48x = 4,443,359.04
5. Step 5: Solve for x
   x = 4,443,359.04/2,402.48
6. Step 6: Final answer
   x = 1,849.49