Finding the Fourth Proportional to 1,511.28, 2,085.69 and 848.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,511.28 : 2,085.69 = 848.18 : x
2. Step 2: Convert to fraction form
   1,511.28/2,085.69 = 848.18/x
3. Step 3: Cross multiply
   1,511.28x = 2,085.69 × 848.18
4. Step 4: Simplify right side
   1,511.28x = 1,769,040.54
5. Step 5: Solve for x
   x = 1,769,040.54/1,511.28
6. Step 6: Final answer
   x = 1,170.56