Finding the Fourth Proportional to 3,903.39, 5,856.71 and 1,306.53

Step by Step Solution

1. Step 1: Write the proportion equation
   3,903.39 : 5,856.71 = 1,306.53 : x
2. Step 2: Convert to fraction form
   3,903.39/5,856.71 = 1,306.53/x
3. Step 3: Cross multiply
   3,903.39x = 5,856.71 × 1,306.53
4. Step 4: Simplify right side
   3,903.39x = 7,651,960.78
5. Step 5: Solve for x
   x = 7,651,960.78/3,903.39
6. Step 6: Final answer
   x = 1,960.34