Finding the Fourth Proportional to 1,219.25, 1,682.72 and 799.95

Step by Step Solution

1. Step 1: Write the proportion equation
   1,219.25 : 1,682.72 = 799.95 : x
2. Step 2: Convert to fraction form
   1,219.25/1,682.72 = 799.95/x
3. Step 3: Cross multiply
   1,219.25x = 1,682.72 × 799.95
4. Step 4: Simplify right side
   1,219.25x = 1,346,091.86
5. Step 5: Solve for x
   x = 1,346,091.86/1,219.25
6. Step 6: Final answer
   x = 1,104.03