Finding the Fourth Proportional to 1,200.06, 1,796.84 and 621.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,200.06 : 1,796.84 = 621.72 : x
2. Step 2: Convert to fraction form
   1,200.06/1,796.84 = 621.72/x
3. Step 3: Cross multiply
   1,200.06x = 1,796.84 × 621.72
4. Step 4: Simplify right side
   1,200.06x = 1,117,128.26
5. Step 5: Solve for x
   x = 1,117,128.26/1,200.06
6. Step 6: Final answer
   x = 930.89