Finding the Fourth Proportional to 2,528.32, 3,789.04 and 1,488.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,528.32 : 3,789.04 = 1,488.80 : x
2. Step 2: Convert to fraction form
   2,528.32/3,789.04 = 1,488.80/x
3. Step 3: Cross multiply
   2,528.32x = 3,789.04 × 1,488.80
4. Step 4: Simplify right side
   2,528.32x = 5,641,122.75
5. Step 5: Solve for x
   x = 5,641,122.75/2,528.32
6. Step 6: Final answer
   x = 2,231.17