Finding the Fourth Proportional to 1,100.43, 1,518.59 and 634.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.43 : 1,518.59 = 634.68 : x
2. Step 2: Convert to fraction form
   1,100.43/1,518.59 = 634.68/x
3. Step 3: Cross multiply
   1,100.43x = 1,518.59 × 634.68
4. Step 4: Simplify right side
   1,100.43x = 963,820.68
5. Step 5: Solve for x
   x = 963,820.68/1,100.43
6. Step 6: Final answer
   x = 875.86