Finding the Fourth Proportional to 2,145.72, 3,219.06 and 1,049.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,145.72 : 3,219.06 = 1,049.52 : x
2. Step 2: Convert to fraction form
   2,145.72/3,219.06 = 1,049.52/x
3. Step 3: Cross multiply
   2,145.72x = 3,219.06 × 1,049.52
4. Step 4: Simplify right side
   2,145.72x = 3,378,467.85
5. Step 5: Solve for x
   x = 3,378,467.85/2,145.72
6. Step 6: Final answer
   x = 1,574.51