Finding the Fourth Proportional to 3,345.59, 5,018.79 and 1,613

Step by Step Solution

1. Step 1: Write the proportion equation
   3,345.59 : 5,018.79 = 1,613 : x
2. Step 2: Convert to fraction form
   3,345.59/5,018.79 = 1,613/x
3. Step 3: Cross multiply
   3,345.59x = 5,018.79 × 1,613
4. Step 4: Simplify right side
   3,345.59x = 8,095,308.27
5. Step 5: Solve for x
   x = 8,095,308.27/3,345.59
6. Step 6: Final answer
   x = 2,419.70