Finding the Fourth Proportional to 1,404.31, 2,106.55 and 582.65

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.31 : 2,106.55 = 582.65 : x
2. Step 2: Convert to fraction form
   1,404.31/2,106.55 = 582.65/x
3. Step 3: Cross multiply
   1,404.31x = 2,106.55 × 582.65
4. Step 4: Simplify right side
   1,404.31x = 1,227,371.55
5. Step 5: Solve for x
   x = 1,227,371.55/1,404.31
6. Step 6: Final answer
   x = 874.01