Finding the Fourth Proportional to 3,861.88, 5,789.14 and 1,783.28

Step by Step Solution

1. Step 1: Write the proportion equation
   3,861.88 : 5,789.14 = 1,783.28 : x
2. Step 2: Convert to fraction form
   3,861.88/5,789.14 = 1,783.28/x
3. Step 3: Cross multiply
   3,861.88x = 5,789.14 × 1,783.28
4. Step 4: Simplify right side
   3,861.88x = 10,323,667.59
5. Step 5: Solve for x
   x = 10,323,667.59/3,861.88
6. Step 6: Final answer
   x = 2,673.23