Finding the Fourth Proportional to 3,864.55, 5,797.90 and 1,269.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,864.55 : 5,797.90 = 1,269.31 : x
2. Step 2: Convert to fraction form
   3,864.55/5,797.90 = 1,269.31/x
3. Step 3: Cross multiply
   3,864.55x = 5,797.90 × 1,269.31
4. Step 4: Simplify right side
   3,864.55x = 7,359,303.46
5. Step 5: Solve for x
   x = 7,359,303.46/3,864.55
6. Step 6: Final answer
   x = 1,904.31