Finding the Fourth Proportional to 3,858.00, 5,783.40 and 2,100.43

Step by Step Solution

1. Step 1: Write the proportion equation
   3,858.00 : 5,783.40 = 2,100.43 : x
2. Step 2: Convert to fraction form
   3,858.00/5,783.40 = 2,100.43/x
3. Step 3: Cross multiply
   3,858.00x = 5,783.40 × 2,100.43
4. Step 4: Simplify right side
   3,858.00x = 12,147,634.09
5. Step 5: Solve for x
   x = 12,147,634.09/3,858.00
6. Step 6: Final answer
   x = 3,148.69