Finding the Fourth Proportional to 2,714.10, 4,070.98 and 866.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,714.10 : 4,070.98 = 866.54 : x
2. Step 2: Convert to fraction form
   2,714.10/4,070.98 = 866.54/x
3. Step 3: Cross multiply
   2,714.10x = 4,070.98 × 866.54
4. Step 4: Simplify right side
   2,714.10x = 3,527,667.01
5. Step 5: Solve for x
   x = 3,527,667.01/2,714.10
6. Step 6: Final answer
   x = 1,299.76