Finding the Fourth Proportional to 1,936.54, 2,908.05 and 1,921.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,936.54 : 2,908.05 = 1,921.42 : x
2. Step 2: Convert to fraction form
   1,936.54/2,908.05 = 1,921.42/x
3. Step 3: Cross multiply
   1,936.54x = 2,908.05 × 1,921.42
4. Step 4: Simplify right side
   1,936.54x = 5,587,585.43
5. Step 5: Solve for x
   x = 5,587,585.43/1,936.54
6. Step 6: Final answer
   x = 2,885.34