Finding the Fourth Proportional to 2,078.52, 3,118.36 and 846.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,078.52 : 3,118.36 = 846.81 : x
2. Step 2: Convert to fraction form
   2,078.52/3,118.36 = 846.81/x
3. Step 3: Cross multiply
   2,078.52x = 3,118.36 × 846.81
4. Step 4: Simplify right side
   2,078.52x = 2,640,658.43
5. Step 5: Solve for x
   x = 2,640,658.43/2,078.52
6. Step 6: Final answer
   x = 1,270.45