Finding the Fourth Proportional to 2,013.60, 3,016.56 and 1,245.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,013.60 : 3,016.56 = 1,245.60 : x
2. Step 2: Convert to fraction form
   2,013.60/3,016.56 = 1,245.60/x
3. Step 3: Cross multiply
   2,013.60x = 3,016.56 × 1,245.60
4. Step 4: Simplify right side
   2,013.60x = 3,757,427.14
5. Step 5: Solve for x
   x = 3,757,427.14/2,013.60
6. Step 6: Final answer
   x = 1,866.02