Finding the Fourth Proportional to 2,912.72, 4,371.78 and 1,181.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,912.72 : 4,371.78 = 1,181.48 : x
2. Step 2: Convert to fraction form
   2,912.72/4,371.78 = 1,181.48/x
3. Step 3: Cross multiply
   2,912.72x = 4,371.78 × 1,181.48
4. Step 4: Simplify right side
   2,912.72x = 5,165,170.63
5. Step 5: Solve for x
   x = 5,165,170.63/2,912.72
6. Step 6: Final answer
   x = 1,773.32