Finding the Fourth Proportional to 2,121.74, 2,921.46 and 1,885.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,121.74 : 2,921.46 = 1,885.27 : x
2. Step 2: Convert to fraction form
   2,121.74/2,921.46 = 1,885.27/x
3. Step 3: Cross multiply
   2,121.74x = 2,921.46 × 1,885.27
4. Step 4: Simplify right side
   2,121.74x = 5,507,740.89
5. Step 5: Solve for x
   x = 5,507,740.89/2,121.74
6. Step 6: Final answer
   x = 2,595.86