Finding the Fourth Proportional to 2,684.10, 4,025.15 and 928.65

Step by Step Solution

1. Step 1: Write the proportion equation
   2,684.10 : 4,025.15 = 928.65 : x
2. Step 2: Convert to fraction form
   2,684.10/4,025.15 = 928.65/x
3. Step 3: Cross multiply
   2,684.10x = 4,025.15 × 928.65
4. Step 4: Simplify right side
   2,684.10x = 3,737,955.55
5. Step 5: Solve for x
   x = 3,737,955.55/2,684.10
6. Step 6: Final answer
   x = 1,392.63