Finding the Fourth Proportional to 2,412.56, 3,618.18 and 852.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,412.56 : 3,618.18 = 852.35 : x
2. Step 2: Convert to fraction form
   2,412.56/3,618.18 = 852.35/x
3. Step 3: Cross multiply
   2,412.56x = 3,618.18 × 852.35
4. Step 4: Simplify right side
   2,412.56x = 3,083,964.27
5. Step 5: Solve for x
   x = 3,083,964.27/2,412.56
6. Step 6: Final answer
   x = 1,278.30