Finding the Fourth Proportional to 1,451.29, 2,173.56 and 718.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,451.29 : 2,173.56 = 718.51 : x
2. Step 2: Convert to fraction form
   1,451.29/2,173.56 = 718.51/x
3. Step 3: Cross multiply
   1,451.29x = 2,173.56 × 718.51
4. Step 4: Simplify right side
   1,451.29x = 1,561,724.60
5. Step 5: Solve for x
   x = 1,561,724.60/1,451.29
6. Step 6: Final answer
   x = 1,076.09