Finding the Fourth Proportional to 2,072.62, 2,858.79 and 1,984.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,072.62 : 2,858.79 = 1,984.06 : x
2. Step 2: Convert to fraction form
   2,072.62/2,858.79 = 1,984.06/x
3. Step 3: Cross multiply
   2,072.62x = 2,858.79 × 1,984.06
4. Step 4: Simplify right side
   2,072.62x = 5,672,010.89
5. Step 5: Solve for x
   x = 5,672,010.89/2,072.62
6. Step 6: Final answer
   x = 2,736.64