Finding the Fourth Proportional to 3,500.39, 5,250.69 and 1,308.71

Step by Step Solution

1. Step 1: Write the proportion equation
   3,500.39 : 5,250.69 = 1,308.71 : x
2. Step 2: Convert to fraction form
   3,500.39/5,250.69 = 1,308.71/x
3. Step 3: Cross multiply
   3,500.39x = 5,250.69 × 1,308.71
4. Step 4: Simplify right side
   3,500.39x = 6,871,630.51
5. Step 5: Solve for x
   x = 6,871,630.51/3,500.39
6. Step 6: Final answer
   x = 1,963.10