Finding the Fourth Proportional to 1,603.98, 2,405.54 and 726.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,603.98 : 2,405.54 = 726.14 : x
2. Step 2: Convert to fraction form
   1,603.98/2,405.54 = 726.14/x
3. Step 3: Cross multiply
   1,603.98x = 2,405.54 × 726.14
4. Step 4: Simplify right side
   1,603.98x = 1,746,758.82
5. Step 5: Solve for x
   x = 1,746,758.82/1,603.98
6. Step 6: Final answer
   x = 1,089.02