Finding the Fourth Proportional to 2,641.89, 3,647.52 and 1,698.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,641.89 : 3,647.52 = 1,698.12 : x
2. Step 2: Convert to fraction form
   2,641.89/3,647.52 = 1,698.12/x
3. Step 3: Cross multiply
   2,641.89x = 3,647.52 × 1,698.12
4. Step 4: Simplify right side
   2,641.89x = 6,193,926.66
5. Step 5: Solve for x
   x = 6,193,926.66/2,641.89
6. Step 6: Final answer
   x = 2,344.51