Finding the Fourth Proportional to 2,085.98, 2,878.17 and 1,246.95

Step by Step Solution

1. Step 1: Write the proportion equation
   2,085.98 : 2,878.17 = 1,246.95 : x
2. Step 2: Convert to fraction form
   2,085.98/2,878.17 = 1,246.95/x
3. Step 3: Cross multiply
   2,085.98x = 2,878.17 × 1,246.95
4. Step 4: Simplify right side
   2,085.98x = 3,588,934.08
5. Step 5: Solve for x
   x = 3,588,934.08/2,085.98
6. Step 6: Final answer
   x = 1,720.50