Finding the Fourth Proportional to 2,105.45, 3,152.10 and 1,862.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105.45 : 3,152.10 = 1,862.45 : x
2. Step 2: Convert to fraction form
   2,105.45/3,152.10 = 1,862.45/x
3. Step 3: Cross multiply
   2,105.45x = 3,152.10 × 1,862.45
4. Step 4: Simplify right side
   2,105.45x = 5,870,628.65
5. Step 5: Solve for x
   x = 5,870,628.65/2,105.45
6. Step 6: Final answer
   x = 2,788.30