Finding the Fourth Proportional to 5,152.22, 7,728.89 and 1,641.40

Step by Step Solution

1. Step 1: Write the proportion equation
   5,152.22 : 7,728.89 = 1,641.40 : x
2. Step 2: Convert to fraction form
   5,152.22/7,728.89 = 1,641.40/x
3. Step 3: Cross multiply
   5,152.22x = 7,728.89 × 1,641.40
4. Step 4: Simplify right side
   5,152.22x = 12,686,172.52
5. Step 5: Solve for x
   x = 12,686,172.52/5,152.22
6. Step 6: Final answer
   x = 2,462.27