Finding the Fourth Proportional to 2,631.51, 3,946.47 and 2,168.14

Step by Step Solution

1. Step 1: Write the proportion equation
   2,631.51 : 3,946.47 = 2,168.14 : x
2. Step 2: Convert to fraction form
   2,631.51/3,946.47 = 2,168.14/x
3. Step 3: Cross multiply
   2,631.51x = 3,946.47 × 2,168.14
4. Step 4: Simplify right side
   2,631.51x = 8,556,499.47
5. Step 5: Solve for x
   x = 8,556,499.47/2,631.51
6. Step 6: Final answer
   x = 3,251.55