Finding the Fourth Proportional to 2,412.05, 3,618.50 and 852.95

Step by Step Solution

1. Step 1: Write the proportion equation
   2,412.05 : 3,618.50 = 852.95 : x
2. Step 2: Convert to fraction form
   2,412.05/3,618.50 = 852.95/x
3. Step 3: Cross multiply
   2,412.05x = 3,618.50 × 852.95
4. Step 4: Simplify right side
   2,412.05x = 3,086,395.31
5. Step 5: Solve for x
   x = 3,086,395.31/2,412.05
6. Step 6: Final answer
   x = 1,279.58