Finding the Fourth Proportional to 2,768.15, 4,152.40 and 1,308.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,768.15 : 4,152.40 = 1,308.71 : x
2. Step 2: Convert to fraction form
   2,768.15/4,152.40 = 1,308.71/x
3. Step 3: Cross multiply
   2,768.15x = 4,152.40 × 1,308.71
4. Step 4: Simplify right side
   2,768.15x = 5,434,263.37
5. Step 5: Solve for x
   x = 5,434,263.37/2,768.15
6. Step 6: Final answer
   x = 1,963.14