Finding the Fourth Proportional to 1,200.05, 1,797.72 and 808.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,200.05 : 1,797.72 = 808.98 : x
2. Step 2: Convert to fraction form
   1,200.05/1,797.72 = 808.98/x
3. Step 3: Cross multiply
   1,200.05x = 1,797.72 × 808.98
4. Step 4: Simplify right side
   1,200.05x = 1,454,319.53
5. Step 5: Solve for x
   x = 1,454,319.53/1,200.05
6. Step 6: Final answer
   x = 1,211.88