Finding the Fourth Proportional to 2,787.50, 4,181.45 and 1,144.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,787.50 : 4,181.45 = 1,144.05 : x
2. Step 2: Convert to fraction form
   2,787.50/4,181.45 = 1,144.05/x
3. Step 3: Cross multiply
   2,787.50x = 4,181.45 × 1,144.05
4. Step 4: Simplify right side
   2,787.50x = 4,783,782.15
5. Step 5: Solve for x
   x = 4,783,782.15/2,787.50
6. Step 6: Final answer
   x = 1,716.16