Finding the Fourth Proportional to 2,386.76, 3,293.88 and 1,338.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,386.76 : 3,293.88 = 1,338.89 : x
2. Step 2: Convert to fraction form
   2,386.76/3,293.88 = 1,338.89/x
3. Step 3: Cross multiply
   2,386.76x = 3,293.88 × 1,338.89
4. Step 4: Simplify right side
   2,386.76x = 4,410,142.99
5. Step 5: Solve for x
   x = 4,410,142.99/2,386.76
6. Step 6: Final answer
   x = 1,847.75