Finding the Fourth Proportional to 2,111.56, 2,898.34 and 2,021.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.56 : 2,898.34 = 2,021.34 : x
2. Step 2: Convert to fraction form
   2,111.56/2,898.34 = 2,021.34/x
3. Step 3: Cross multiply
   2,111.56x = 2,898.34 × 2,021.34
4. Step 4: Simplify right side
   2,111.56x = 5,858,530.58
5. Step 5: Solve for x
   x = 5,858,530.58/2,111.56
6. Step 6: Final answer
   x = 2,774.50