Finding the Fourth Proportional to 2,607.42, 3,911.18 and 852.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,607.42 : 3,911.18 = 852.42 : x
2. Step 2: Convert to fraction form
   2,607.42/3,911.18 = 852.42/x
3. Step 3: Cross multiply
   2,607.42x = 3,911.18 × 852.42
4. Step 4: Simplify right side
   2,607.42x = 3,333,968.06
5. Step 5: Solve for x
   x = 3,333,968.06/2,607.42
6. Step 6: Final answer
   x = 1,278.65