Finding the Fourth Proportional to 3,457.18, 5,185.50 and 1,117.18

Step by Step Solution

1. Step 1: Write the proportion equation
   3,457.18 : 5,185.50 = 1,117.18 : x
2. Step 2: Convert to fraction form
   3,457.18/5,185.50 = 1,117.18/x
3. Step 3: Cross multiply
   3,457.18x = 5,185.50 × 1,117.18
4. Step 4: Simplify right side
   3,457.18x = 5,793,136.89
5. Step 5: Solve for x
   x = 5,793,136.89/3,457.18
6. Step 6: Final answer
   x = 1,675.68