Finding the Fourth Proportional to 2,083.80, 3,126.72 and 852.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,083.80 : 3,126.72 = 852.06 : x
2. Step 2: Convert to fraction form
   2,083.80/3,126.72 = 852.06/x
3. Step 3: Cross multiply
   2,083.80x = 3,126.72 × 852.06
4. Step 4: Simplify right side
   2,083.80x = 2,664,153.04
5. Step 5: Solve for x
   x = 2,664,153.04/2,083.80
6. Step 6: Final answer
   x = 1,278.51