Finding the Fourth Proportional to 2,245.78, 3,365.70 and 1,013.77

Step by Step Solution

1. Step 1: Write the proportion equation
   2,245.78 : 3,365.70 = 1,013.77 : x
2. Step 2: Convert to fraction form
   2,245.78/3,365.70 = 1,013.77/x
3. Step 3: Cross multiply
   2,245.78x = 3,365.70 × 1,013.77
4. Step 4: Simplify right side
   2,245.78x = 3,412,045.69
5. Step 5: Solve for x
   x = 3,412,045.69/2,245.78
6. Step 6: Final answer
   x = 1,519.31