Finding the Fourth Proportional to 2,978.79, 4,105.06 and 2,182.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978.79 : 4,105.06 = 2,182.35 : x
2. Step 2: Convert to fraction form
   2,978.79/4,105.06 = 2,182.35/x
3. Step 3: Cross multiply
   2,978.79x = 4,105.06 × 2,182.35
4. Step 4: Simplify right side
   2,978.79x = 8,958,677.69
5. Step 5: Solve for x
   x = 8,958,677.69/2,978.79
6. Step 6: Final answer
   x = 3,007.49