Finding the Fourth Proportional to 1,856.54, 2,786.42 and 1,164.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,856.54 : 2,786.42 = 1,164.56 : x
2. Step 2: Convert to fraction form
   1,856.54/2,786.42 = 1,164.56/x
3. Step 3: Cross multiply
   1,856.54x = 2,786.42 × 1,164.56
4. Step 4: Simplify right side
   1,856.54x = 3,244,933.52
5. Step 5: Solve for x
   x = 3,244,933.52/1,856.54
6. Step 6: Final answer
   x = 1,747.84