Finding the Fourth Proportional to 1,404.56, 2,106.78 and 582.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.56 : 2,106.78 = 582.60 : x
2. Step 2: Convert to fraction form
   1,404.56/2,106.78 = 582.60/x
3. Step 3: Cross multiply
   1,404.56x = 2,106.78 × 582.60
4. Step 4: Simplify right side
   1,404.56x = 1,227,410.03
5. Step 5: Solve for x
   x = 1,227,410.03/1,404.56
6. Step 6: Final answer
   x = 873.88