Finding the Fourth Proportional to 2,591.42, 3,577.37 and 1,528.85

Step by Step Solution

1. Step 1: Write the proportion equation
   2,591.42 : 3,577.37 = 1,528.85 : x
2. Step 2: Convert to fraction form
   2,591.42/3,577.37 = 1,528.85/x
3. Step 3: Cross multiply
   2,591.42x = 3,577.37 × 1,528.85
4. Step 4: Simplify right side
   2,591.42x = 5,469,274.89
5. Step 5: Solve for x
   x = 5,469,274.89/2,591.42
6. Step 6: Final answer
   x = 2,110.54