Finding the Fourth Proportional to 2,989.62, 4,479.27 and 1,603.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,989.62 : 4,479.27 = 1,603.59 : x
2. Step 2: Convert to fraction form
   2,989.62/4,479.27 = 1,603.59/x
3. Step 3: Cross multiply
   2,989.62x = 4,479.27 × 1,603.59
4. Step 4: Simplify right side
   2,989.62x = 7,182,912.58
5. Step 5: Solve for x
   x = 7,182,912.58/2,989.62
6. Step 6: Final answer
   x = 2,402.62