Finding the Fourth Proportional to 2,085.54, 2,878.62 and 1,246.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,085.54 : 2,878.62 = 1,246.82 : x
2. Step 2: Convert to fraction form
   2,085.54/2,878.62 = 1,246.82/x
3. Step 3: Cross multiply
   2,085.54x = 2,878.62 × 1,246.82
4. Step 4: Simplify right side
   2,085.54x = 3,589,106.60
5. Step 5: Solve for x
   x = 3,589,106.60/2,085.54
6. Step 6: Final answer
   x = 1,720.95