Finding the Fourth Proportional to 2,518.43, 3,776.16 and 762.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,518.43 : 3,776.16 = 762.90 : x
2. Step 2: Convert to fraction form
   2,518.43/3,776.16 = 762.90/x
3. Step 3: Cross multiply
   2,518.43x = 3,776.16 × 762.90
4. Step 4: Simplify right side
   2,518.43x = 2,880,832.46
5. Step 5: Solve for x
   x = 2,880,832.46/2,518.43
6. Step 6: Final answer
   x = 1,143.90