Finding the Fourth Proportional to 2,419.49, 3,338.71 and 1,357.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,419.49 : 3,338.71 = 1,357.07 : x
2. Step 2: Convert to fraction form
   2,419.49/3,338.71 = 1,357.07/x
3. Step 3: Cross multiply
   2,419.49x = 3,338.71 × 1,357.07
4. Step 4: Simplify right side
   2,419.49x = 4,530,843.09
5. Step 5: Solve for x
   x = 4,530,843.09/2,419.49
6. Step 6: Final answer
   x = 1,872.64