Finding the Fourth Proportional to 2,518.38, 3,778.10 and 763.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,518.38 : 3,778.10 = 763.49 : x
2. Step 2: Convert to fraction form
   2,518.38/3,778.10 = 763.49/x
3. Step 3: Cross multiply
   2,518.38x = 3,778.10 × 763.49
4. Step 4: Simplify right side
   2,518.38x = 2,884,518.86
5. Step 5: Solve for x
   x = 2,884,518.86/2,518.38
6. Step 6: Final answer
   x = 1,145.39