Finding the Fourth Proportional to 1,409.47, 2,105.56 and 1,016.11

Step by Step Solution

1. Step 1: Write the proportion equation
   1,409.47 : 2,105.56 = 1,016.11 : x
2. Step 2: Convert to fraction form
   1,409.47/2,105.56 = 1,016.11/x
3. Step 3: Cross multiply
   1,409.47x = 2,105.56 × 1,016.11
4. Step 4: Simplify right side
   1,409.47x = 2,139,485.50
5. Step 5: Solve for x
   x = 2,139,485.50/1,409.47
6. Step 6: Final answer
   x = 1,517.94