Finding the Fourth Proportional to 2,119.53, 3,180.72 and 804.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,119.53 : 3,180.72 = 804.50 : x
2. Step 2: Convert to fraction form
   2,119.53/3,180.72 = 804.50/x
3. Step 3: Cross multiply
   2,119.53x = 3,180.72 × 804.50
4. Step 4: Simplify right side
   2,119.53x = 2,558,873.34
5. Step 5: Solve for x
   x = 2,558,873.34/2,119.53
6. Step 6: Final answer
   x = 1,207.28