Finding the Fourth Proportional to 1,814.02, 2,721.05 and 718.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,814.02 : 2,721.05 = 718.72 : x
2. Step 2: Convert to fraction form
   1,814.02/2,721.05 = 718.72/x
3. Step 3: Cross multiply
   1,814.02x = 2,721.05 × 718.72
4. Step 4: Simplify right side
   1,814.02x = 1,955,673.06
5. Step 5: Solve for x
   x = 1,955,673.06/1,814.02
6. Step 6: Final answer
   x = 1,078.09