Finding the Fourth Proportional to 2,391.17, 3,297.98 and 1,730.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,391.17 : 3,297.98 = 1,730.21 : x
2. Step 2: Convert to fraction form
   2,391.17/3,297.98 = 1,730.21/x
3. Step 3: Cross multiply
   2,391.17x = 3,297.98 × 1,730.21
4. Step 4: Simplify right side
   2,391.17x = 5,706,185.81
5. Step 5: Solve for x
   x = 5,706,185.81/2,391.17
6. Step 6: Final answer
   x = 2,386.36