Finding the Fourth Proportional to 1,189.02, 1,641.72 and 796.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,189.02 : 1,641.72 = 796.98 : x
2. Step 2: Convert to fraction form
   1,189.02/1,641.72 = 796.98/x
3. Step 3: Cross multiply
   1,189.02x = 1,641.72 × 796.98
4. Step 4: Simplify right side
   1,189.02x = 1,308,418.01
5. Step 5: Solve for x
   x = 1,308,418.01/1,189.02
6. Step 6: Final answer
   x = 1,100.42