Finding the Fourth Proportional to 1,054.81, 1,454.52 and 723.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,054.81 : 1,454.52 = 723.72 : x
2. Step 2: Convert to fraction form
   1,054.81/1,454.52 = 723.72/x
3. Step 3: Cross multiply
   1,054.81x = 1,454.52 × 723.72
4. Step 4: Simplify right side
   1,054.81x = 1,052,665.21
5. Step 5: Solve for x
   x = 1,052,665.21/1,054.81
6. Step 6: Final answer
   x = 997.97