Finding the Fourth Proportional to 2,111.29, 3,167.82 and 1,289.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.29 : 3,167.82 = 1,289.59 : x
2. Step 2: Convert to fraction form
   2,111.29/3,167.82 = 1,289.59/x
3. Step 3: Cross multiply
   2,111.29x = 3,167.82 × 1,289.59
4. Step 4: Simplify right side
   2,111.29x = 4,085,181.07
5. Step 5: Solve for x
   x = 4,085,181.07/2,111.29
6. Step 6: Final answer
   x = 1,934.92