Finding the Fourth Proportional to 2,386.86, 3,293.94 and 1,338.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,386.86 : 3,293.94 = 1,338.96 : x
2. Step 2: Convert to fraction form
   2,386.86/3,293.94 = 1,338.96/x
3. Step 3: Cross multiply
   2,386.86x = 3,293.94 × 1,338.96
4. Step 4: Simplify right side
   2,386.86x = 4,410,453.90
5. Step 5: Solve for x
   x = 4,410,453.90/2,386.86
6. Step 6: Final answer
   x = 1,847.81