Finding the Fourth Proportional to 2,656.89, 3,986.16 and 925.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,656.89 : 3,986.16 = 925.38 : x
2. Step 2: Convert to fraction form
   2,656.89/3,986.16 = 925.38/x
3. Step 3: Cross multiply
   2,656.89x = 3,986.16 × 925.38
4. Step 4: Simplify right side
   2,656.89x = 3,688,712.74
5. Step 5: Solve for x
   x = 3,688,712.74/2,656.89
6. Step 6: Final answer
   x = 1,388.36