Finding the Fourth Proportional to 1,518.31, 2,096.09 and 1,020.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,518.31 : 2,096.09 = 1,020.79 : x
2. Step 2: Convert to fraction form
   1,518.31/2,096.09 = 1,020.79/x
3. Step 3: Cross multiply
   1,518.31x = 2,096.09 × 1,020.79
4. Step 4: Simplify right side
   1,518.31x = 2,139,662.61
5. Step 5: Solve for x
   x = 2,139,662.61/1,518.31
6. Step 6: Final answer
   x = 1,409.24