Finding the Fourth Proportional to 2,555.27, 3,834.06 and 1,238.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,555.27 : 3,834.06 = 1,238.30 : x
2. Step 2: Convert to fraction form
   2,555.27/3,834.06 = 1,238.30/x
3. Step 3: Cross multiply
   2,555.27x = 3,834.06 × 1,238.30
4. Step 4: Simplify right side
   2,555.27x = 4,747,716.50
5. Step 5: Solve for x
   x = 4,747,716.50/2,555.27
6. Step 6: Final answer
   x = 1,858.01