Finding the Fourth Proportional to 2,012.88, 2,776.73 and 1,265.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,012.88 : 2,776.73 = 1,265.43 : x
2. Step 2: Convert to fraction form
   2,012.88/2,776.73 = 1,265.43/x
3. Step 3: Cross multiply
   2,012.88x = 2,776.73 × 1,265.43
4. Step 4: Simplify right side
   2,012.88x = 3,513,751.12
5. Step 5: Solve for x
   x = 3,513,751.12/2,012.88
6. Step 6: Final answer
   x = 1,745.63