Finding the Fourth Proportional to 1,678.17, 2,516.72 and 1,568.97

Step by Step Solution

1. Step 1: Write the proportion equation
   1,678.17 : 2,516.72 = 1,568.97 : x
2. Step 2: Convert to fraction form
   1,678.17/2,516.72 = 1,568.97/x
3. Step 3: Cross multiply
   1,678.17x = 2,516.72 × 1,568.97
4. Step 4: Simplify right side
   1,678.17x = 3,948,650.33
5. Step 5: Solve for x
   x = 3,948,650.33/1,678.17
6. Step 6: Final answer
   x = 2,352.95