Finding the Fourth Proportional to 2,069.45, 2,855.74 and 1,230.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,069.45 : 2,855.74 = 1,230.24 : x
2. Step 2: Convert to fraction form
   2,069.45/2,855.74 = 1,230.24/x
3. Step 3: Cross multiply
   2,069.45x = 2,855.74 × 1,230.24
4. Step 4: Simplify right side
   2,069.45x = 3,513,262.72
5. Step 5: Solve for x
   x = 3,513,262.72/2,069.45
6. Step 6: Final answer
   x = 1,697.68