Finding the Fourth Proportional to 3,196.60, 4,792.74 and 1,247.80

Step by Step Solution

1. Step 1: Write the proportion equation
   3,196.60 : 4,792.74 = 1,247.80 : x
2. Step 2: Convert to fraction form
   3,196.60/4,792.74 = 1,247.80/x
3. Step 3: Cross multiply
   3,196.60x = 4,792.74 × 1,247.80
4. Step 4: Simplify right side
   3,196.60x = 5,980,380.97
5. Step 5: Solve for x
   x = 5,980,380.97/3,196.60
6. Step 6: Final answer
   x = 1,870.86