Finding the Fourth Proportional to 2,391.10, 3,585.57 and 852.14

Step by Step Solution

1. Step 1: Write the proportion equation
   2,391.10 : 3,585.57 = 852.14 : x
2. Step 2: Convert to fraction form
   2,391.10/3,585.57 = 852.14/x
3. Step 3: Cross multiply
   2,391.10x = 3,585.57 × 852.14
4. Step 4: Simplify right side
   2,391.10x = 3,055,407.62
5. Step 5: Solve for x
   x = 3,055,407.62/2,391.10
6. Step 6: Final answer
   x = 1,277.83