Finding the Fourth Proportional to 2,076.12, 3,111.93 and 843.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,076.12 : 3,111.93 = 843.18 : x
2. Step 2: Convert to fraction form
   2,076.12/3,111.93 = 843.18/x
3. Step 3: Cross multiply
   2,076.12x = 3,111.93 × 843.18
4. Step 4: Simplify right side
   2,076.12x = 2,623,917.14
5. Step 5: Solve for x
   x = 2,623,917.14/2,076.12
6. Step 6: Final answer
   x = 1,263.86