Finding the Fourth Proportional to 2,012.05, 2,777.31 and 1,267.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,012.05 : 2,777.31 = 1,267.25 : x
2. Step 2: Convert to fraction form
   2,012.05/2,777.31 = 1,267.25/x
3. Step 3: Cross multiply
   2,012.05x = 2,777.31 × 1,267.25
4. Step 4: Simplify right side
   2,012.05x = 3,519,539.76
5. Step 5: Solve for x
   x = 3,519,539.76/2,012.05
6. Step 6: Final answer
   x = 1,749.24