Finding the Fourth Proportional to 1,512.49, 2,085.92 and 981.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,512.49 : 2,085.92 = 981.18 : x
2. Step 2: Convert to fraction form
   1,512.49/2,085.92 = 981.18/x
3. Step 3: Cross multiply
   1,512.49x = 2,085.92 × 981.18
4. Step 4: Simplify right side
   1,512.49x = 2,046,665.44
5. Step 5: Solve for x
   x = 2,046,665.44/1,512.49
6. Step 6: Final answer
   x = 1,353.18