Finding the Fourth Proportional to 2,528.21, 3,488.33 and 1,533.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,528.21 : 3,488.33 = 1,533.47 : x
2. Step 2: Convert to fraction form
   2,528.21/3,488.33 = 1,533.47/x
3. Step 3: Cross multiply
   2,528.21x = 3,488.33 × 1,533.47
4. Step 4: Simplify right side
   2,528.21x = 5,349,235.80
5. Step 5: Solve for x
   x = 5,349,235.80/2,528.21
6. Step 6: Final answer
   x = 2,115.82