Finding the Fourth Proportional to 2,111.02, 3,169.78 and 2,072.14

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.02 : 3,169.78 = 2,072.14 : x
2. Step 2: Convert to fraction form
   2,111.02/3,169.78 = 2,072.14/x
3. Step 3: Cross multiply
   2,111.02x = 3,169.78 × 2,072.14
4. Step 4: Simplify right side
   2,111.02x = 6,568,227.93
5. Step 5: Solve for x
   x = 6,568,227.93/2,111.02
6. Step 6: Final answer
   x = 3,111.40