Finding the Fourth Proportional to 2,574.80, 3,553.31 and 1,455.85

Step by Step Solution

1. Step 1: Write the proportion equation
   2,574.80 : 3,553.31 = 1,455.85 : x
2. Step 2: Convert to fraction form
   2,574.80/3,553.31 = 1,455.85/x
3. Step 3: Cross multiply
   2,574.80x = 3,553.31 × 1,455.85
4. Step 4: Simplify right side
   2,574.80x = 5,173,086.36
5. Step 5: Solve for x
   x = 5,173,086.36/2,574.80
6. Step 6: Final answer
   x = 2,009.12