Finding the Fourth Proportional to 1,775.58, 2,658.69 and 1,189.65

Step by Step Solution

1. Step 1: Write the proportion equation
   1,775.58 : 2,658.69 = 1,189.65 : x
2. Step 2: Convert to fraction form
   1,775.58/2,658.69 = 1,189.65/x
3. Step 3: Cross multiply
   1,775.58x = 2,658.69 × 1,189.65
4. Step 4: Simplify right side
   1,775.58x = 3,162,910.56
5. Step 5: Solve for x
   x = 3,162,910.56/1,775.58
6. Step 6: Final answer
   x = 1,781.34