Finding the Fourth Proportional to 2,710.44, 4,065.72 and 762.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,710.44 : 4,065.72 = 762.72 : x
2. Step 2: Convert to fraction form
   2,710.44/4,065.72 = 762.72/x
3. Step 3: Cross multiply
   2,710.44x = 4,065.72 × 762.72
4. Step 4: Simplify right side
   2,710.44x = 3,101,005.96
5. Step 5: Solve for x
   x = 3,101,005.96/2,710.44
6. Step 6: Final answer
   x = 1,144.10