Finding the Fourth Proportional to 1,404.95, 2,106.89 and 582.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.95 : 2,106.89 = 582.80 : x
2. Step 2: Convert to fraction form
   1,404.95/2,106.89 = 582.80/x
3. Step 3: Cross multiply
   1,404.95x = 2,106.89 × 582.80
4. Step 4: Simplify right side
   1,404.95x = 1,227,892.58
5. Step 5: Solve for x
   x = 1,227,892.58/1,404.95
6. Step 6: Final answer
   x = 873.98