Finding the Fourth Proportional to 2,502.78, 3,453.78 and 1,455.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,502.78 : 3,453.78 = 1,455.42 : x
2. Step 2: Convert to fraction form
   2,502.78/3,453.78 = 1,455.42/x
3. Step 3: Cross multiply
   2,502.78x = 3,453.78 × 1,455.42
4. Step 4: Simplify right side
   2,502.78x = 5,026,700.49
5. Step 5: Solve for x
   x = 5,026,700.49/2,502.78
6. Step 6: Final answer
   x = 2,008.45