Finding the Fourth Proportional to 2,647.88, 3,654.04 and 1,528.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,647.88 : 3,654.04 = 1,528.80 : x
2. Step 2: Convert to fraction form
   2,647.88/3,654.04 = 1,528.80/x
3. Step 3: Cross multiply
   2,647.88x = 3,654.04 × 1,528.80
4. Step 4: Simplify right side
   2,647.88x = 5,586,296.35
5. Step 5: Solve for x
   x = 5,586,296.35/2,647.88
6. Step 6: Final answer
   x = 2,109.72