Finding the Fourth Proportional to 2,386.18, 3,292.50 and 1,391.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,386.18 : 3,292.50 = 1,391.32 : x
2. Step 2: Convert to fraction form
   2,386.18/3,292.50 = 1,391.32/x
3. Step 3: Cross multiply
   2,386.18x = 3,292.50 × 1,391.32
4. Step 4: Simplify right side
   2,386.18x = 4,580,921.10
5. Step 5: Solve for x
   x = 4,580,921.10/2,386.18
6. Step 6: Final answer
   x = 1,919.77