Finding the Fourth Proportional to 2,787.23, 4,181.15 and 938.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,787.23 : 4,181.15 = 938.27 : x
2. Step 2: Convert to fraction form
   2,787.23/4,181.15 = 938.27/x
3. Step 3: Cross multiply
   2,787.23x = 4,181.15 × 938.27
4. Step 4: Simplify right side
   2,787.23x = 3,923,022.01
5. Step 5: Solve for x
   x = 3,923,022.01/2,787.23
6. Step 6: Final answer
   x = 1,407.50