Finding the Fourth Proportional to 2,843.39, 3,924.72 and 1,900.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,843.39 : 3,924.72 = 1,900.55 : x
2. Step 2: Convert to fraction form
   2,843.39/3,924.72 = 1,900.55/x
3. Step 3: Cross multiply
   2,843.39x = 3,924.72 × 1,900.55
4. Step 4: Simplify right side
   2,843.39x = 7,459,106.97
5. Step 5: Solve for x
   x = 7,459,106.97/2,843.39
6. Step 6: Final answer
   x = 2,623.32