Finding the Fourth Proportional to 2,186.67, 3,017.50 and 1,242.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,186.67 : 3,017.50 = 1,242.42 : x
2. Step 2: Convert to fraction form
   2,186.67/3,017.50 = 1,242.42/x
3. Step 3: Cross multiply
   2,186.67x = 3,017.50 × 1,242.42
4. Step 4: Simplify right side
   2,186.67x = 3,749,002.35
5. Step 5: Solve for x
   x = 3,749,002.35/2,186.67
6. Step 6: Final answer
   x = 1,714.48