Finding the Fourth Proportional to 2,766.60, 4,151.52 and 1,379.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,766.60 : 4,151.52 = 1,379.88 : x
2. Step 2: Convert to fraction form
   2,766.60/4,151.52 = 1,379.88/x
3. Step 3: Cross multiply
   2,766.60x = 4,151.52 × 1,379.88
4. Step 4: Simplify right side
   2,766.60x = 5,728,599.42
5. Step 5: Solve for x
   x = 5,728,599.42/2,766.60
6. Step 6: Final answer
   x = 2,070.63