Finding the Fourth Proportional to 1,511.40, 2,085.69 and 848.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,511.40 : 2,085.69 = 848.23 : x
2. Step 2: Convert to fraction form
   1,511.40/2,085.69 = 848.23/x
3. Step 3: Cross multiply
   1,511.40x = 2,085.69 × 848.23
4. Step 4: Simplify right side
   1,511.40x = 1,769,144.83
5. Step 5: Solve for x
   x = 1,769,144.83/1,511.40
6. Step 6: Final answer
   x = 1,170.53