Finding the Fourth Proportional to 2,591.09, 3,575.69 and 1,528.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,591.09 : 3,575.69 = 1,528.86 : x
2. Step 2: Convert to fraction form
   2,591.09/3,575.69 = 1,528.86/x
3. Step 3: Cross multiply
   2,591.09x = 3,575.69 × 1,528.86
4. Step 4: Simplify right side
   2,591.09x = 5,466,729.41
5. Step 5: Solve for x
   x = 5,466,729.41/2,591.09
6. Step 6: Final answer
   x = 2,109.82