Finding the Fourth Proportional to 2,386.62, 3,581.22 and 925.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,386.62 : 3,581.22 = 925.83 : x
2. Step 2: Convert to fraction form
   2,386.62/3,581.22 = 925.83/x
3. Step 3: Cross multiply
   2,386.62x = 3,581.22 × 925.83
4. Step 4: Simplify right side
   2,386.62x = 3,315,600.91
5. Step 5: Solve for x
   x = 3,315,600.91/2,386.62
6. Step 6: Final answer
   x = 1,389.25