Finding the Fourth Proportional to 2,613.42, 3,919.50 and 764.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,613.42 : 3,919.50 = 764.58 : x
2. Step 2: Convert to fraction form
   2,613.42/3,919.50 = 764.58/x
3. Step 3: Cross multiply
   2,613.42x = 3,919.50 × 764.58
4. Step 4: Simplify right side
   2,613.42x = 2,996,771.31
5. Step 5: Solve for x
   x = 2,996,771.31/2,613.42
6. Step 6: Final answer
   x = 1,146.69