Finding the Fourth Proportional to 2,978.97, 4,109.90 and 1,799.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978.97 : 4,109.90 = 1,799.61 : x
2. Step 2: Convert to fraction form
   2,978.97/4,109.90 = 1,799.61/x
3. Step 3: Cross multiply
   2,978.97x = 4,109.90 × 1,799.61
4. Step 4: Simplify right side
   2,978.97x = 7,396,217.14
5. Step 5: Solve for x
   x = 7,396,217.14/2,978.97
6. Step 6: Final answer
   x = 2,482.81