Finding the Fourth Proportional to 2,411.81, 3,618.15 and 852.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,411.81 : 3,618.15 = 852.72 : x
2. Step 2: Convert to fraction form
   2,411.81/3,618.15 = 852.72/x
3. Step 3: Cross multiply
   2,411.81x = 3,618.15 × 852.72
4. Step 4: Simplify right side
   2,411.81x = 3,085,275.61
5. Step 5: Solve for x
   x = 3,085,275.61/2,411.81
6. Step 6: Final answer
   x = 1,279.24