Finding the Fourth Proportional to 2,185.48, 3,017.15 and 1,677.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,185.48 : 3,017.15 = 1,677.21 : x
2. Step 2: Convert to fraction form
   2,185.48/3,017.15 = 1,677.21/x
3. Step 3: Cross multiply
   2,185.48x = 3,017.15 × 1,677.21
4. Step 4: Simplify right side
   2,185.48x = 5,060,380.74
5. Step 5: Solve for x
   x = 5,060,380.74/2,185.48
6. Step 6: Final answer
   x = 2,315.45