Finding the Fourth Proportional to 2,387.65, 3,579.45 and 927.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,387.65 : 3,579.45 = 927.82 : x
2. Step 2: Convert to fraction form
   2,387.65/3,579.45 = 927.82/x
3. Step 3: Cross multiply
   2,387.65x = 3,579.45 × 927.82
4. Step 4: Simplify right side
   2,387.65x = 3,321,085.30
5. Step 5: Solve for x
   x = 3,321,085.30/2,387.65
6. Step 6: Final answer
   x = 1,390.94