Finding the Fourth Proportional to 1,339.98, 1,849.10 and 842.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,339.98 : 1,849.10 = 842.46 : x
2. Step 2: Convert to fraction form
   1,339.98/1,849.10 = 842.46/x
3. Step 3: Cross multiply
   1,339.98x = 1,849.10 × 842.46
4. Step 4: Simplify right side
   1,339.98x = 1,557,788.57
5. Step 5: Solve for x
   x = 1,557,788.57/1,339.98
6. Step 6: Final answer
   x = 1,162.55