Finding the Fourth Proportional to 2,714.68, 4,071.56 and 766.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,714.68 : 4,071.56 = 766.42 : x
2. Step 2: Convert to fraction form
   2,714.68/4,071.56 = 766.42/x
3. Step 3: Cross multiply
   2,714.68x = 4,071.56 × 766.42
4. Step 4: Simplify right side
   2,714.68x = 3,120,521.18
5. Step 5: Solve for x
   x = 3,120,521.18/2,714.68
6. Step 6: Final answer
   x = 1,149.50