Finding the Fourth Proportional to 2,150.72, 3,224.88 and 1,054.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,150.72 : 3,224.88 = 1,054.80 : x
2. Step 2: Convert to fraction form
   2,150.72/3,224.88 = 1,054.80/x
3. Step 3: Cross multiply
   2,150.72x = 3,224.88 × 1,054.80
4. Step 4: Simplify right side
   2,150.72x = 3,401,603.42
5. Step 5: Solve for x
   x = 3,401,603.42/2,150.72
6. Step 6: Final answer
   x = 1,581.61