Finding the Fourth Proportional to 1,575.59, 2,176.20 and 1,155.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,575.59 : 2,176.20 = 1,155.33 : x
2. Step 2: Convert to fraction form
   1,575.59/2,176.20 = 1,155.33/x
3. Step 3: Cross multiply
   1,575.59x = 2,176.20 × 1,155.33
4. Step 4: Simplify right side
   1,575.59x = 2,514,229.15
5. Step 5: Solve for x
   x = 2,514,229.15/1,575.59
6. Step 6: Final answer
   x = 1,595.74