Finding the Fourth Proportional to 3,196.40, 4,793.16 and 1,247.60

Step by Step Solution

1. Step 1: Write the proportion equation
   3,196.40 : 4,793.16 = 1,247.60 : x
2. Step 2: Convert to fraction form
   3,196.40/4,793.16 = 1,247.60/x
3. Step 3: Cross multiply
   3,196.40x = 4,793.16 × 1,247.60
4. Step 4: Simplify right side
   3,196.40x = 5,979,946.42
5. Step 5: Solve for x
   x = 5,979,946.42/3,196.40
6. Step 6: Final answer
   x = 1,870.84