Finding the Fourth Proportional to 1,512.27, 2,086.43 and 981.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,512.27 : 2,086.43 = 981.55 : x
2. Step 2: Convert to fraction form
   1,512.27/2,086.43 = 981.55/x
3. Step 3: Cross multiply
   1,512.27x = 2,086.43 × 981.55
4. Step 4: Simplify right side
   1,512.27x = 2,047,933.07
5. Step 5: Solve for x
   x = 2,047,933.07/1,512.27
6. Step 6: Final answer
   x = 1,354.21