Finding the Fourth Proportional to 2,386.38, 3,292.88 and 1,391.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,386.38 : 3,292.88 = 1,391.52 : x
2. Step 2: Convert to fraction form
   2,386.38/3,292.88 = 1,391.52/x
3. Step 3: Cross multiply
   2,386.38x = 3,292.88 × 1,391.52
4. Step 4: Simplify right side
   2,386.38x = 4,582,108.38
5. Step 5: Solve for x
   x = 4,582,108.38/2,386.38
6. Step 6: Final answer
   x = 1,920.11