Finding the Fourth Proportional to 2,577.17, 3,866.01 and 728.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,577.17 : 3,866.01 = 728.30 : x
2. Step 2: Convert to fraction form
   2,577.17/3,866.01 = 728.30/x
3. Step 3: Cross multiply
   2,577.17x = 3,866.01 × 728.30
4. Step 4: Simplify right side
   2,577.17x = 2,815,608.88
5. Step 5: Solve for x
   x = 2,815,608.88/2,577.17
6. Step 6: Final answer
   x = 1,092.52