Finding the Fourth Proportional to 2,315.89, 3,473.12 and 776.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,315.89 : 3,473.12 = 776.53 : x
2. Step 2: Convert to fraction form
   2,315.89/3,473.12 = 776.53/x
3. Step 3: Cross multiply
   2,315.89x = 3,473.12 × 776.53
4. Step 4: Simplify right side
   2,315.89x = 2,696,981.87
5. Step 5: Solve for x
   x = 2,696,981.87/2,315.89
6. Step 6: Final answer
   x = 1,164.56