Finding the Fourth Proportional to 2,740.72, 4,111.35 and 766.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,740.72 : 4,111.35 = 766.34 : x
2. Step 2: Convert to fraction form
   2,740.72/4,111.35 = 766.34/x
3. Step 3: Cross multiply
   2,740.72x = 4,111.35 × 766.34
4. Step 4: Simplify right side
   2,740.72x = 3,150,688.13
5. Step 5: Solve for x
   x = 3,150,688.13/2,740.72
6. Step 6: Final answer
   x = 1,149.59