Finding the Fourth Proportional to 2,312.94, 3,469.59 and 852.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,312.94 : 3,469.59 = 852.09 : x
2. Step 2: Convert to fraction form
   2,312.94/3,469.59 = 852.09/x
3. Step 3: Cross multiply
   2,312.94x = 3,469.59 × 852.09
4. Step 4: Simplify right side
   2,312.94x = 2,956,402.94
5. Step 5: Solve for x
   x = 2,956,402.94/2,312.94
6. Step 6: Final answer
   x = 1,278.20