Finding the Fourth Proportional to 2,236.95, 3,086.86 and 1,242.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,236.95 : 3,086.86 = 1,242.17 : x
2. Step 2: Convert to fraction form
   2,236.95/3,086.86 = 1,242.17/x
3. Step 3: Cross multiply
   2,236.95x = 3,086.86 × 1,242.17
4. Step 4: Simplify right side
   2,236.95x = 3,834,400.25
5. Step 5: Solve for x
   x = 3,834,400.25/2,236.95
6. Step 6: Final answer
   x = 1,714.12