Finding the Fourth Proportional to 1,339.37, 1,848.38 and 779.97

Step by Step Solution

1. Step 1: Write the proportion equation
   1,339.37 : 1,848.38 = 779.97 : x
2. Step 2: Convert to fraction form
   1,339.37/1,848.38 = 779.97/x
3. Step 3: Cross multiply
   1,339.37x = 1,848.38 × 779.97
4. Step 4: Simplify right side
   1,339.37x = 1,441,680.95
5. Step 5: Solve for x
   x = 1,441,680.95/1,339.37
6. Step 6: Final answer
   x = 1,076.39