Finding the Fourth Proportional to 2,518.68, 3,776.54 and 763.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,518.68 : 3,776.54 = 763.15 : x
2. Step 2: Convert to fraction form
   2,518.68/3,776.54 = 763.15/x
3. Step 3: Cross multiply
   2,518.68x = 3,776.54 × 763.15
4. Step 4: Simplify right side
   2,518.68x = 2,882,062.69
5. Step 5: Solve for x
   x = 2,882,062.69/2,518.68
6. Step 6: Final answer
   x = 1,144.28