Finding the Fourth Proportional to 2,096.61, 3,143.54 and 1,172.26

Step by Step Solution

1. Step 1: Write the proportion equation
   2,096.61 : 3,143.54 = 1,172.26 : x
2. Step 2: Convert to fraction form
   2,096.61/3,143.54 = 1,172.26/x
3. Step 3: Cross multiply
   2,096.61x = 3,143.54 × 1,172.26
4. Step 4: Simplify right side
   2,096.61x = 3,685,052.36
5. Step 5: Solve for x
   x = 3,685,052.36/2,096.61
6. Step 6: Final answer
   x = 1,757.63