Finding the Fourth Proportional to 2,418.72, 3,338.53 and 1,424.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,418.72 : 3,338.53 = 1,424.57 : x
2. Step 2: Convert to fraction form
   2,418.72/3,338.53 = 1,424.57/x
3. Step 3: Cross multiply
   2,418.72x = 3,338.53 × 1,424.57
4. Step 4: Simplify right side
   2,418.72x = 4,755,984.29
5. Step 5: Solve for x
   x = 4,755,984.29/2,418.72
6. Step 6: Final answer
   x = 1,966.32