Finding the Fourth Proportional to 1,050.37, 1,447.72 and 718.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,050.37 : 1,447.72 = 718.22 : x
2. Step 2: Convert to fraction form
   1,050.37/1,447.72 = 718.22/x
3. Step 3: Cross multiply
   1,050.37x = 1,447.72 × 718.22
4. Step 4: Simplify right side
   1,050.37x = 1,039,780.55
5. Step 5: Solve for x
   x = 1,039,780.55/1,050.37
6. Step 6: Final answer
   x = 989.92