Finding the Fourth Proportional to 1,362.34, 1,879.98 and 764.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,362.34 : 1,879.98 = 764.79 : x
2. Step 2: Convert to fraction form
   1,362.34/1,879.98 = 764.79/x
3. Step 3: Cross multiply
   1,362.34x = 1,879.98 × 764.79
4. Step 4: Simplify right side
   1,362.34x = 1,437,789.90
5. Step 5: Solve for x
   x = 1,437,789.90/1,362.34
6. Step 6: Final answer
   x = 1,055.38