Finding the Fourth Proportional to 2,085.17, 3,124.68 and 1,968.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,085.17 : 3,124.68 = 1,968.30 : x
2. Step 2: Convert to fraction form
   2,085.17/3,124.68 = 1,968.30/x
3. Step 3: Cross multiply
   2,085.17x = 3,124.68 × 1,968.30
4. Step 4: Simplify right side
   2,085.17x = 6,150,300.26
5. Step 5: Solve for x
   x = 6,150,300.26/2,085.17
6. Step 6: Final answer
   x = 2,949.55