Finding the Fourth Proportional to 2,386.15, 3,580.29 and 925.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,386.15 : 3,580.29 = 925.42 : x
2. Step 2: Convert to fraction form
   2,386.15/3,580.29 = 925.42/x
3. Step 3: Cross multiply
   2,386.15x = 3,580.29 × 925.42
4. Step 4: Simplify right side
   2,386.15x = 3,313,263.02
5. Step 5: Solve for x
   x = 3,313,263.02/2,386.15
6. Step 6: Final answer
   x = 1,388.54