Finding the Fourth Proportional to 2,577.01, 3,865.82 and 910.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,577.01 : 3,865.82 = 910.79 : x
2. Step 2: Convert to fraction form
   2,577.01/3,865.82 = 910.79/x
3. Step 3: Cross multiply
   2,577.01x = 3,865.82 × 910.79
4. Step 4: Simplify right side
   2,577.01x = 3,520,926.31
5. Step 5: Solve for x
   x = 3,520,926.31/2,577.01
6. Step 6: Final answer
   x = 1,366.28