Finding the Fourth Proportional to 2,386.54, 3,293.72 and 1,391.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,386.54 : 3,293.72 = 1,391.82 : x
2. Step 2: Convert to fraction form
   2,386.54/3,293.72 = 1,391.82/x
3. Step 3: Cross multiply
   2,386.54x = 3,293.72 × 1,391.82
4. Step 4: Simplify right side
   2,386.54x = 4,584,265.37
5. Step 5: Solve for x
   x = 4,584,265.37/2,386.54
6. Step 6: Final answer
   x = 1,920.88