Finding the Fourth Proportional to 3,858.23, 5,784.71 and 1,855.87

Step by Step Solution

1. Step 1: Write the proportion equation
   3,858.23 : 5,784.71 = 1,855.87 : x
2. Step 2: Convert to fraction form
   3,858.23/5,784.71 = 1,855.87/x
3. Step 3: Cross multiply
   3,858.23x = 5,784.71 × 1,855.87
4. Step 4: Simplify right side
   3,858.23x = 10,735,640.82
5. Step 5: Solve for x
   x = 10,735,640.82/3,858.23
6. Step 6: Final answer
   x = 2,782.53