Finding the Fourth Proportional to 1,512.18, 2,086.79 and 981.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,512.18 : 2,086.79 = 981.27 : x
2. Step 2: Convert to fraction form
   1,512.18/2,086.79 = 981.27/x
3. Step 3: Cross multiply
   1,512.18x = 2,086.79 × 981.27
4. Step 4: Simplify right side
   1,512.18x = 2,047,699.52
5. Step 5: Solve for x
   x = 2,047,699.52/1,512.18
6. Step 6: Final answer
   x = 1,354.14