Finding the Fourth Proportional to 2,112.89, 2,939.09 and 2,072.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,112.89 : 2,939.09 = 2,072.79 : x
2. Step 2: Convert to fraction form
   2,112.89/2,939.09 = 2,072.79/x
3. Step 3: Cross multiply
   2,112.89x = 2,939.09 × 2,072.79
4. Step 4: Simplify right side
   2,112.89x = 6,092,106.00
5. Step 5: Solve for x
   x = 6,092,106.00/2,112.89
6. Step 6: Final answer
   x = 2,883.31