Finding the Fourth Proportional to 2,980.43, 4,480.77 and 2,436.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,980.43 : 4,480.77 = 2,436.56 : x
2. Step 2: Convert to fraction form
   2,980.43/4,480.77 = 2,436.56/x
3. Step 3: Cross multiply
   2,980.43x = 4,480.77 × 2,436.56
4. Step 4: Simplify right side
   2,980.43x = 10,917,664.95
5. Step 5: Solve for x
   x = 10,917,664.95/2,980.43
6. Step 6: Final answer
   x = 3,663.12