Finding the Fourth Proportional to 2,315.25, 3,473.69 and 776.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,315.25 : 3,473.69 = 776.25 : x
2. Step 2: Convert to fraction form
   2,315.25/3,473.69 = 776.25/x
3. Step 3: Cross multiply
   2,315.25x = 3,473.69 × 776.25
4. Step 4: Simplify right side
   2,315.25x = 2,696,447.98
5. Step 5: Solve for x
   x = 2,696,447.98/2,315.25
6. Step 6: Final answer
   x = 1,164.65