Finding the Fourth Proportional to 1,603.79, 2,406.59 and 738.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,603.79 : 2,406.59 = 738.17 : x
2. Step 2: Convert to fraction form
   1,603.79/2,406.59 = 738.17/x
3. Step 3: Cross multiply
   1,603.79x = 2,406.59 × 738.17
4. Step 4: Simplify right side
   1,603.79x = 1,776,468.85
5. Step 5: Solve for x
   x = 1,776,468.85/1,603.79
6. Step 6: Final answer
   x = 1,107.67