Finding the Fourth Proportional to 2,085.12, 3,126.63 and 852.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,085.12 : 3,126.63 = 852.03 : x
2. Step 2: Convert to fraction form
   2,085.12/3,126.63 = 852.03/x
3. Step 3: Cross multiply
   2,085.12x = 3,126.63 × 852.03
4. Step 4: Simplify right side
   2,085.12x = 2,663,982.56
5. Step 5: Solve for x
   x = 2,663,982.56/2,085.12
6. Step 6: Final answer
   x = 1,277.62