Finding the Fourth Proportional to 2,386.05, 3,578.22 and 925.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,386.05 : 3,578.22 = 925.71 : x
2. Step 2: Convert to fraction form
   2,386.05/3,578.22 = 925.71/x
3. Step 3: Cross multiply
   2,386.05x = 3,578.22 × 925.71
4. Step 4: Simplify right side
   2,386.05x = 3,312,394.04
5. Step 5: Solve for x
   x = 3,312,394.04/2,386.05
6. Step 6: Final answer
   x = 1,388.23