Finding the Fourth Proportional to 2,680.09, 4,020.72 and 925.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,680.09 : 4,020.72 = 925.02 : x
2. Step 2: Convert to fraction form
   2,680.09/4,020.72 = 925.02/x
3. Step 3: Cross multiply
   2,680.09x = 4,020.72 × 925.02
4. Step 4: Simplify right side
   2,680.09x = 3,719,246.41
5. Step 5: Solve for x
   x = 3,719,246.41/2,680.09
6. Step 6: Final answer
   x = 1,387.73