Finding the Fourth Proportional to 2,411.55, 3,618.45 and 852.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,411.55 : 3,618.45 = 852.74 : x
2. Step 2: Convert to fraction form
   2,411.55/3,618.45 = 852.74/x
3. Step 3: Cross multiply
   2,411.55x = 3,618.45 × 852.74
4. Step 4: Simplify right side
   2,411.55x = 3,085,581.09
5. Step 5: Solve for x
   x = 3,085,581.09/2,411.55
6. Step 6: Final answer
   x = 1,279.50