Finding the Fourth Proportional to 1,915.58, 2,872.47 and 804.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,915.58 : 2,872.47 = 804.76 : x
2. Step 2: Convert to fraction form
   1,915.58/2,872.47 = 804.76/x
3. Step 3: Cross multiply
   1,915.58x = 2,872.47 × 804.76
4. Step 4: Simplify right side
   1,915.58x = 2,311,638.76
5. Step 5: Solve for x
   x = 2,311,638.76/1,915.58
6. Step 6: Final answer
   x = 1,206.76