Finding the Fourth Proportional to 1,339.35, 1,848.24 and 842.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,339.35 : 1,848.24 = 842.25 : x
2. Step 2: Convert to fraction form
   1,339.35/1,848.24 = 842.25/x
3. Step 3: Cross multiply
   1,339.35x = 1,848.24 × 842.25
4. Step 4: Simplify right side
   1,339.35x = 1,556,680.14
5. Step 5: Solve for x
   x = 1,556,680.14/1,339.35
6. Step 6: Final answer
   x = 1,162.27