Finding the Fourth Proportional to 2,236.74, 3,086.70 and 1,242.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,236.74 : 3,086.70 = 1,242.12 : x
2. Step 2: Convert to fraction form
   2,236.74/3,086.70 = 1,242.12/x
3. Step 3: Cross multiply
   2,236.74x = 3,086.70 × 1,242.12
4. Step 4: Simplify right side
   2,236.74x = 3,834,051.80
5. Step 5: Solve for x
   x = 3,834,051.80/2,236.74
6. Step 6: Final answer
   x = 1,714.12