Finding the Fourth Proportional to 2,518.58, 3,778.52 and 763.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,518.58 : 3,778.52 = 763.59 : x
2. Step 2: Convert to fraction form
   2,518.58/3,778.52 = 763.59/x
3. Step 3: Cross multiply
   2,518.58x = 3,778.52 × 763.59
4. Step 4: Simplify right side
   2,518.58x = 2,885,240.09
5. Step 5: Solve for x
   x = 2,885,240.09/2,518.58
6. Step 6: Final answer
   x = 1,145.58