Finding the Fourth Proportional to 1,100.38, 1,518.59 and 634.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.38 : 1,518.59 = 634.63 : x
2. Step 2: Convert to fraction form
   1,100.38/1,518.59 = 634.63/x
3. Step 3: Cross multiply
   1,100.38x = 1,518.59 × 634.63
4. Step 4: Simplify right side
   1,100.38x = 963,732.01
5. Step 5: Solve for x
   x = 963,732.01/1,100.38
6. Step 6: Final answer
   x = 875.82