Finding the Fourth Proportional to 1,069.69, 1,603.71 and 722.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,069.69 : 1,603.71 = 722.04 : x
2. Step 2: Convert to fraction form
   1,069.69/1,603.71 = 722.04/x
3. Step 3: Cross multiply
   1,069.69x = 1,603.71 × 722.04
4. Step 4: Simplify right side
   1,069.69x = 1,157,939.16
5. Step 5: Solve for x
   x = 1,157,939.16/1,069.69
6. Step 6: Final answer
   x = 1,082.50