Finding the Fourth Proportional to 2,186.89, 3,017.85 and 1,242.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,186.89 : 3,017.85 = 1,242.83 : x
2. Step 2: Convert to fraction form
   2,186.89/3,017.85 = 1,242.83/x
3. Step 3: Cross multiply
   2,186.89x = 3,017.85 × 1,242.83
4. Step 4: Simplify right side
   2,186.89x = 3,750,674.52
5. Step 5: Solve for x
   x = 3,750,674.52/2,186.89
6. Step 6: Final answer
   x = 1,715.07