Finding the Fourth Proportional to 1,410.74, 2,114.89 and 679.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,410.74 : 2,114.89 = 679.31 : x
2. Step 2: Convert to fraction form
   1,410.74/2,114.89 = 679.31/x
3. Step 3: Cross multiply
   1,410.74x = 2,114.89 × 679.31
4. Step 4: Simplify right side
   1,410.74x = 1,436,665.93
5. Step 5: Solve for x
   x = 1,436,665.93/1,410.74
6. Step 6: Final answer
   x = 1,018.38