Finding the Fourth Proportional to 2,145.60, 3,219.42 and 1,049.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,145.60 : 3,219.42 = 1,049.37 : x
2. Step 2: Convert to fraction form
   2,145.60/3,219.42 = 1,049.37/x
3. Step 3: Cross multiply
   2,145.60x = 3,219.42 × 1,049.37
4. Step 4: Simplify right side
   2,145.60x = 3,378,362.77
5. Step 5: Solve for x
   x = 3,378,362.77/2,145.60
6. Step 6: Final answer
   x = 1,574.55