Finding the Fourth Proportional to 1,367.48, 1,886.59 and 842.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,367.48 : 1,886.59 = 842.60 : x
2. Step 2: Convert to fraction form
   1,367.48/1,886.59 = 842.60/x
3. Step 3: Cross multiply
   1,367.48x = 1,886.59 × 842.60
4. Step 4: Simplify right side
   1,367.48x = 1,589,643.34
5. Step 5: Solve for x
   x = 1,589,643.34/1,367.48
6. Step 6: Final answer
   x = 1,162.46