Finding the Fourth Proportional to 1,019.22, 1,404.51 and 723.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,019.22 : 1,404.51 = 723.98 : x
2. Step 2: Convert to fraction form
   1,019.22/1,404.51 = 723.98/x
3. Step 3: Cross multiply
   1,019.22x = 1,404.51 × 723.98
4. Step 4: Simplify right side
   1,019.22x = 1,016,830.13
5. Step 5: Solve for x
   x = 1,016,830.13/1,019.22
6. Step 6: Final answer
   x = 997.66