Finding the Fourth Proportional to 1,626.94, 2,245.58 and 928.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,626.94 : 2,245.58 = 928.72 : x
2. Step 2: Convert to fraction form
   1,626.94/2,245.58 = 928.72/x
3. Step 3: Cross multiply
   1,626.94x = 2,245.58 × 928.72
4. Step 4: Simplify right side
   1,626.94x = 2,085,508.28
5. Step 5: Solve for x
   x = 2,085,508.28/1,626.94
6. Step 6: Final answer
   x = 1,281.86