Finding the Fourth Proportional to 1,362.56, 1,879.54 and 772.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,362.56 : 1,879.54 = 772.98 : x
2. Step 2: Convert to fraction form
   1,362.56/1,879.54 = 772.98/x
3. Step 3: Cross multiply
   1,362.56x = 1,879.54 × 772.98
4. Step 4: Simplify right side
   1,362.56x = 1,452,846.83
5. Step 5: Solve for x
   x = 1,452,846.83/1,362.56
6. Step 6: Final answer
   x = 1,066.26