Finding the Fourth Proportional to 2,392.46, 3,586.52 and 853.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,392.46 : 3,586.52 = 853.10 : x
2. Step 2: Convert to fraction form
   2,392.46/3,586.52 = 853.10/x
3. Step 3: Cross multiply
   2,392.46x = 3,586.52 × 853.10
4. Step 4: Simplify right side
   2,392.46x = 3,059,638.01
5. Step 5: Solve for x
   x = 3,059,638.01/2,392.46
6. Step 6: Final answer
   x = 1,278.87