Finding the Fourth Proportional to 2,104.29, 2,903.91 and 1,172.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,104.29 : 2,903.91 = 1,172.79 : x
2. Step 2: Convert to fraction form
   2,104.29/2,903.91 = 1,172.79/x
3. Step 3: Cross multiply
   2,104.29x = 2,903.91 × 1,172.79
4. Step 4: Simplify right side
   2,104.29x = 3,405,662.09
5. Step 5: Solve for x
   x = 3,405,662.09/2,104.29
6. Step 6: Final answer
   x = 1,618.44