Finding the Fourth Proportional to 2,055.81, 2,837.31 and 1,171.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,055.81 : 2,837.31 = 1,171.69 : x
2. Step 2: Convert to fraction form
   2,055.81/2,837.31 = 1,171.69/x
3. Step 3: Cross multiply
   2,055.81x = 2,837.31 × 1,171.69
4. Step 4: Simplify right side
   2,055.81x = 3,324,447.75
5. Step 5: Solve for x
   x = 3,324,447.75/2,055.81
6. Step 6: Final answer
   x = 1,617.10