Finding the Fourth Proportional to 2,714.86, 4,070.76 and 865.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,714.86 : 4,070.76 = 865.54 : x
2. Step 2: Convert to fraction form
   2,714.86/4,070.76 = 865.54/x
3. Step 3: Cross multiply
   2,714.86x = 4,070.76 × 865.54
4. Step 4: Simplify right side
   2,714.86x = 3,523,405.61
5. Step 5: Solve for x
   x = 3,523,405.61/2,714.86
6. Step 6: Final answer
   x = 1,297.82