Finding the Fourth Proportional to 2,079.68, 2,873.76 and 1,978.44

Step by Step Solution

1. Step 1: Write the proportion equation
   2,079.68 : 2,873.76 = 1,978.44 : x
2. Step 2: Convert to fraction form
   2,079.68/2,873.76 = 1,978.44/x
3. Step 3: Cross multiply
   2,079.68x = 2,873.76 × 1,978.44
4. Step 4: Simplify right side
   2,079.68x = 5,685,561.73
5. Step 5: Solve for x
   x = 5,685,561.73/2,079.68
6. Step 6: Final answer
   x = 2,733.86