Finding the Fourth Proportional to 1,714.72, 2,366.33 and 928.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,714.72 : 2,366.33 = 928.78 : x
2. Step 2: Convert to fraction form
   1,714.72/2,366.33 = 928.78/x
3. Step 3: Cross multiply
   1,714.72x = 2,366.33 × 928.78
4. Step 4: Simplify right side
   1,714.72x = 2,197,799.98
5. Step 5: Solve for x
   x = 2,197,799.98/1,714.72
6. Step 6: Final answer
   x = 1,281.73