Finding the Fourth Proportional to 1,200.06, 1,796.85 and 810.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,200.06 : 1,796.85 = 810.63 : x
2. Step 2: Convert to fraction form
   1,200.06/1,796.85 = 810.63/x
3. Step 3: Cross multiply
   1,200.06x = 1,796.85 × 810.63
4. Step 4: Simplify right side
   1,200.06x = 1,456,580.52
5. Step 5: Solve for x
   x = 1,456,580.52/1,200.06
6. Step 6: Final answer
   x = 1,213.76