Finding the Fourth Proportional to 1,410.07, 2,113.69 and 679.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,410.07 : 2,113.69 = 679.25 : x
2. Step 2: Convert to fraction form
   1,410.07/2,113.69 = 679.25/x
3. Step 3: Cross multiply
   1,410.07x = 2,113.69 × 679.25
4. Step 4: Simplify right side
   1,410.07x = 1,435,723.93
5. Step 5: Solve for x
   x = 1,435,723.93/1,410.07
6. Step 6: Final answer
   x = 1,018.19