Finding the Fourth Proportional to 2,479.73, 3,428.61 and 2,168.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,479.73 : 3,428.61 = 2,168.51 : x
2. Step 2: Convert to fraction form
   2,479.73/3,428.61 = 2,168.51/x
3. Step 3: Cross multiply
   2,479.73x = 3,428.61 × 2,168.51
4. Step 4: Simplify right side
   2,479.73x = 7,434,975.07
5. Step 5: Solve for x
   x = 7,434,975.07/2,479.73
6. Step 6: Final answer
   x = 2,998.30