Finding the Fourth Proportional to 2,886.35, 4,326.42 and 1,243.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,886.35 : 4,326.42 = 1,243.67 : x
2. Step 2: Convert to fraction form
   2,886.35/4,326.42 = 1,243.67/x
3. Step 3: Cross multiply
   2,886.35x = 4,326.42 × 1,243.67
4. Step 4: Simplify right side
   2,886.35x = 5,380,638.76
5. Step 5: Solve for x
   x = 5,380,638.76/2,886.35
6. Step 6: Final answer
   x = 1,864.17