Finding the Fourth Proportional to 4,945.55, 7,418.56 and 1,613.79

Step by Step Solution

1. Step 1: Write the proportion equation
   4,945.55 : 7,418.56 = 1,613.79 : x
2. Step 2: Convert to fraction form
   4,945.55/7,418.56 = 1,613.79/x
3. Step 3: Cross multiply
   4,945.55x = 7,418.56 × 1,613.79
4. Step 4: Simplify right side
   4,945.55x = 11,971,952.78
5. Step 5: Solve for x
   x = 11,971,952.78/4,945.55
6. Step 6: Final answer
   x = 2,420.75