Finding the Fourth Proportional to 2,866.58, 4,300.78 and 1,306.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,866.58 : 4,300.78 = 1,306.52 : x
2. Step 2: Convert to fraction form
   2,866.58/4,300.78 = 1,306.52/x
3. Step 3: Cross multiply
   2,866.58x = 4,300.78 × 1,306.52
4. Step 4: Simplify right side
   2,866.58x = 5,619,055.09
5. Step 5: Solve for x
   x = 5,619,055.09/2,866.58
6. Step 6: Final answer
   x = 1,960.19