Finding the Fourth Proportional to 1,100.51, 1,647.41 and 636.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.51 : 1,647.41 = 636.98 : x
2. Step 2: Convert to fraction form
   1,100.51/1,647.41 = 636.98/x
3. Step 3: Cross multiply
   1,100.51x = 1,647.41 × 636.98
4. Step 4: Simplify right side
   1,100.51x = 1,049,367.22
5. Step 5: Solve for x
   x = 1,049,367.22/1,100.51
6. Step 6: Final answer
   x = 953.53