Finding the Fourth Proportional to 2,574.89, 3,553.31 and 1,455.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,574.89 : 3,553.31 = 1,455.78 : x
2. Step 2: Convert to fraction form
   2,574.89/3,553.31 = 1,455.78/x
3. Step 3: Cross multiply
   2,574.89x = 3,553.31 × 1,455.78
4. Step 4: Simplify right side
   2,574.89x = 5,172,830.35
5. Step 5: Solve for x
   x = 5,172,830.35/2,574.89
6. Step 6: Final answer
   x = 2,008.96