Finding the Fourth Proportional to 3,185.60, 4,776.91 and 1,211.59

Step by Step Solution

1. Step 1: Write the proportion equation
   3,185.60 : 4,776.91 = 1,211.59 : x
2. Step 2: Convert to fraction form
   3,185.60/4,776.91 = 1,211.59/x
3. Step 3: Cross multiply
   3,185.60x = 4,776.91 × 1,211.59
4. Step 4: Simplify right side
   3,185.60x = 5,787,659.33
5. Step 5: Solve for x
   x = 5,787,659.33/3,185.60
6. Step 6: Final answer
   x = 1,816.82