Finding the Fourth Proportional to 1,047.36, 1,566.72 and 636.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,047.36 : 1,566.72 = 636.48 : x
2. Step 2: Convert to fraction form
   1,047.36/1,566.72 = 636.48/x
3. Step 3: Cross multiply
   1,047.36x = 1,566.72 × 636.48
4. Step 4: Simplify right side
   1,047.36x = 997,185.95
5. Step 5: Solve for x
   x = 997,185.95/1,047.36
6. Step 6: Final answer
   x = 952.09