Finding the Fourth Proportional to 3,178.32, 4,766.72 and 1,098.38

Step by Step Solution

1. Step 1: Write the proportion equation
   3,178.32 : 4,766.72 = 1,098.38 : x
2. Step 2: Convert to fraction form
   3,178.32/4,766.72 = 1,098.38/x
3. Step 3: Cross multiply
   3,178.32x = 4,766.72 × 1,098.38
4. Step 4: Simplify right side
   3,178.32x = 5,235,669.91
5. Step 5: Solve for x
   x = 5,235,669.91/3,178.32
6. Step 6: Final answer
   x = 1,647.31