Finding the Fourth Proportional to 2,096.79, 3,144.72 and 1,272.11

Step by Step Solution

1. Step 1: Write the proportion equation
   2,096.79 : 3,144.72 = 1,272.11 : x
2. Step 2: Convert to fraction form
   2,096.79/3,144.72 = 1,272.11/x
3. Step 3: Cross multiply
   2,096.79x = 3,144.72 × 1,272.11
4. Step 4: Simplify right side
   2,096.79x = 4,000,418.81
5. Step 5: Solve for x
   x = 4,000,418.81/2,096.79
6. Step 6: Final answer
   x = 1,907.88