Finding the Fourth Proportional to 2,123.89, 3,170.31 and 1,967.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.89 : 3,170.31 = 1,967.56 : x
2. Step 2: Convert to fraction form
   2,123.89/3,170.31 = 1,967.56/x
3. Step 3: Cross multiply
   2,123.89x = 3,170.31 × 1,967.56
4. Step 4: Simplify right side
   2,123.89x = 6,237,775.14
5. Step 5: Solve for x
   x = 6,237,775.14/2,123.89
6. Step 6: Final answer
   x = 2,936.96