Finding the Fourth Proportional to 1,339.38, 1,848.02 and 779.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,339.38 : 1,848.02 = 779.51 : x
2. Step 2: Convert to fraction form
   1,339.38/1,848.02 = 779.51/x
3. Step 3: Cross multiply
   1,339.38x = 1,848.02 × 779.51
4. Step 4: Simplify right side
   1,339.38x = 1,440,542.78
5. Step 5: Solve for x
   x = 1,440,542.78/1,339.38
6. Step 6: Final answer
   x = 1,075.53