Finding the Fourth Proportional to 1,579.81, 2,180.69 and 1,084.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,579.81 : 2,180.69 = 1,084.09 : x
2. Step 2: Convert to fraction form
   1,579.81/2,180.69 = 1,084.09/x
3. Step 3: Cross multiply
   1,579.81x = 2,180.69 × 1,084.09
4. Step 4: Simplify right side
   1,579.81x = 2,364,064.22
5. Step 5: Solve for x
   x = 2,364,064.22/1,579.81
6. Step 6: Final answer
   x = 1,496.42