Finding the Fourth Proportional to 1,483.40, 2,047.61 and 986.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,483.40 : 2,047.61 = 986.18 : x
2. Step 2: Convert to fraction form
   1,483.40/2,047.61 = 986.18/x
3. Step 3: Cross multiply
   1,483.40x = 2,047.61 × 986.18
4. Step 4: Simplify right side
   1,483.40x = 2,019,304.26
5. Step 5: Solve for x
   x = 2,019,304.26/1,483.40
6. Step 6: Final answer
   x = 1,361.27