Finding the Fourth Proportional to 2,315.46, 3,472.46 and 776.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,315.46 : 3,472.46 = 776.10 : x
2. Step 2: Convert to fraction form
   2,315.46/3,472.46 = 776.10/x
3. Step 3: Cross multiply
   2,315.46x = 3,472.46 × 776.10
4. Step 4: Simplify right side
   2,315.46x = 2,694,958.84
5. Step 5: Solve for x
   x = 2,694,958.84/2,315.46
6. Step 6: Final answer
   x = 1,163.90