Finding the Fourth Proportional to 2,628.58, 3,630.67 and 1,968.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,628.58 : 3,630.67 = 1,968.38 : x
2. Step 2: Convert to fraction form
   2,628.58/3,630.67 = 1,968.38/x
3. Step 3: Cross multiply
   2,628.58x = 3,630.67 × 1,968.38
4. Step 4: Simplify right side
   2,628.58x = 7,146,538.21
5. Step 5: Solve for x
   x = 7,146,538.21/2,628.58
6. Step 6: Final answer
   x = 2,718.78