Finding the Fourth Proportional to 2,767.38, 4,147.86 and 1,121.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,767.38 : 4,147.86 = 1,121.88 : x
2. Step 2: Convert to fraction form
   2,767.38/4,147.86 = 1,121.88/x
3. Step 3: Cross multiply
   2,767.38x = 4,147.86 × 1,121.88
4. Step 4: Simplify right side
   2,767.38x = 4,653,401.18
5. Step 5: Solve for x
   x = 4,653,401.18/2,767.38
6. Step 6: Final answer
   x = 1,681.52