Finding the Fourth Proportional to 2,419.89, 3,339.45 and 1,425.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,419.89 : 3,339.45 = 1,425.18 : x
2. Step 2: Convert to fraction form
   2,419.89/3,339.45 = 1,425.18/x
3. Step 3: Cross multiply
   2,419.89x = 3,339.45 × 1,425.18
4. Step 4: Simplify right side
   2,419.89x = 4,759,317.35
5. Step 5: Solve for x
   x = 4,759,317.35/2,419.89
6. Step 6: Final answer
   x = 1,966.75