Finding the Fourth Proportional to 2,577.17, 3,867.34 and 1,016.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,577.17 : 3,867.34 = 1,016.91 : x
2. Step 2: Convert to fraction form
   2,577.17/3,867.34 = 1,016.91/x
3. Step 3: Cross multiply
   2,577.17x = 3,867.34 × 1,016.91
4. Step 4: Simplify right side
   2,577.17x = 3,932,736.72
5. Step 5: Solve for x
   x = 3,932,736.72/2,577.17
6. Step 6: Final answer
   x = 1,525.99