Finding the Fourth Proportional to 1,336.27, 2,014.42 and 1,247.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,336.27 : 2,014.42 = 1,247.08 : x
2. Step 2: Convert to fraction form
   1,336.27/2,014.42 = 1,247.08/x
3. Step 3: Cross multiply
   1,336.27x = 2,014.42 × 1,247.08
4. Step 4: Simplify right side
   1,336.27x = 2,512,142.89
5. Step 5: Solve for x
   x = 2,512,142.89/1,336.27
6. Step 6: Final answer
   x = 1,879.97