Finding the Fourth Proportional to 1,053.29, 1,453.91 and 722.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,053.29 : 1,453.91 = 722.81 : x
2. Step 2: Convert to fraction form
   1,053.29/1,453.91 = 722.81/x
3. Step 3: Cross multiply
   1,053.29x = 1,453.91 × 722.81
4. Step 4: Simplify right side
   1,053.29x = 1,050,900.69
5. Step 5: Solve for x
   x = 1,050,900.69/1,053.29
6. Step 6: Final answer
   x = 997.73