Finding the Fourth Proportional to 2,236.98, 3,086.85 and 1,242.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,236.98 : 3,086.85 = 1,242.30 : x
2. Step 2: Convert to fraction form
   2,236.98/3,086.85 = 1,242.30/x
3. Step 3: Cross multiply
   2,236.98x = 3,086.85 × 1,242.30
4. Step 4: Simplify right side
   2,236.98x = 3,834,793.76
5. Step 5: Solve for x
   x = 3,834,793.76/2,236.98
6. Step 6: Final answer
   x = 1,714.27