Finding the Fourth Proportional to 2,449.09, 3,379.35 and 1,386.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,449.09 : 3,379.35 = 1,386.82 : x
2. Step 2: Convert to fraction form
   2,449.09/3,379.35 = 1,386.82/x
3. Step 3: Cross multiply
   2,449.09x = 3,379.35 × 1,386.82
4. Step 4: Simplify right side
   2,449.09x = 4,686,550.17
5. Step 5: Solve for x
   x = 4,686,550.17/2,449.09
6. Step 6: Final answer
   x = 1,913.59