Finding the Fourth Proportional to 1,100.03, 1,647.42 and 636.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.03 : 1,647.42 = 636.83 : x
2. Step 2: Convert to fraction form
   1,100.03/1,647.42 = 636.83/x
3. Step 3: Cross multiply
   1,100.03x = 1,647.42 × 636.83
4. Step 4: Simplify right side
   1,100.03x = 1,049,126.48
5. Step 5: Solve for x
   x = 1,049,126.48/1,100.03
6. Step 6: Final answer
   x = 953.73