Finding the Fourth Proportional to 1,370.77, 1,891.56 and 773.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,370.77 : 1,891.56 = 773.27 : x
2. Step 2: Convert to fraction form
   1,370.77/1,891.56 = 773.27/x
3. Step 3: Cross multiply
   1,370.77x = 1,891.56 × 773.27
4. Step 4: Simplify right side
   1,370.77x = 1,462,686.60
5. Step 5: Solve for x
   x = 1,462,686.60/1,370.77
6. Step 6: Final answer
   x = 1,067.06