Finding the Fourth Proportional to 3,698.78, 5,549.82 and 1,967

Step by Step Solution

1. Step 1: Write the proportion equation
   3,698.78 : 5,549.82 = 1,967 : x
2. Step 2: Convert to fraction form
   3,698.78/5,549.82 = 1,967/x
3. Step 3: Cross multiply
   3,698.78x = 5,549.82 × 1,967
4. Step 4: Simplify right side
   3,698.78x = 10,916,495.94
5. Step 5: Solve for x
   x = 10,916,495.94/3,698.78
6. Step 6: Final answer
   x = 2,951.38