Finding the Fourth Proportional to 2,866.60, 4,300.07 and 786.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,866.60 : 4,300.07 = 786.52 : x
2. Step 2: Convert to fraction form
   2,866.60/4,300.07 = 786.52/x
3. Step 3: Cross multiply
   2,866.60x = 4,300.07 × 786.52
4. Step 4: Simplify right side
   2,866.60x = 3,382,065.62
5. Step 5: Solve for x
   x = 3,382,065.62/2,866.60
6. Step 6: Final answer
   x = 1,179.82