Finding the Fourth Proportional to 2,518.12, 3,776.64 and 786.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,518.12 : 3,776.64 = 786.34 : x
2. Step 2: Convert to fraction form
   2,518.12/3,776.64 = 786.34/x
3. Step 3: Cross multiply
   2,518.12x = 3,776.64 × 786.34
4. Step 4: Simplify right side
   2,518.12x = 2,969,723.10
5. Step 5: Solve for x
   x = 2,969,723.10/2,518.12
6. Step 6: Final answer
   x = 1,179.34