Finding the Fourth Proportional to 2,766.60, 4,146.69 and 1,206.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,766.60 : 4,146.69 = 1,206.09 : x
2. Step 2: Convert to fraction form
   2,766.60/4,146.69 = 1,206.09/x
3. Step 3: Cross multiply
   2,766.60x = 4,146.69 × 1,206.09
4. Step 4: Simplify right side
   2,766.60x = 5,001,281.34
5. Step 5: Solve for x
   x = 5,001,281.34/2,766.60
6. Step 6: Final answer
   x = 1,807.74