Finding the Fourth Proportional to 2,069.70, 3,099.69 and 1,603.77

Step by Step Solution

1. Step 1: Write the proportion equation
   2,069.70 : 3,099.69 = 1,603.77 : x
2. Step 2: Convert to fraction form
   2,069.70/3,099.69 = 1,603.77/x
3. Step 3: Cross multiply
   2,069.70x = 3,099.69 × 1,603.77
4. Step 4: Simplify right side
   2,069.70x = 4,971,189.83
5. Step 5: Solve for x
   x = 4,971,189.83/2,069.70
6. Step 6: Final answer
   x = 2,401.89