Finding the Fourth Proportional to 2,555.81, 3,834.03 and 912.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,555.81 : 3,834.03 = 912.53 : x
2. Step 2: Convert to fraction form
   2,555.81/3,834.03 = 912.53/x
3. Step 3: Cross multiply
   2,555.81x = 3,834.03 × 912.53
4. Step 4: Simplify right side
   2,555.81x = 3,498,667.40
5. Step 5: Solve for x
   x = 3,498,667.40/2,555.81
6. Step 6: Final answer
   x = 1,368.91