Finding the Fourth Proportional to 2,315.39, 3,472.37 and 776.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,315.39 : 3,472.37 = 776.03 : x
2. Step 2: Convert to fraction form
   2,315.39/3,472.37 = 776.03/x
3. Step 3: Cross multiply
   2,315.39x = 3,472.37 × 776.03
4. Step 4: Simplify right side
   2,315.39x = 2,694,659.41
5. Step 5: Solve for x
   x = 2,694,659.41/2,315.39
6. Step 6: Final answer
   x = 1,163.80