Finding the Fourth Proportional to 1,034.43, 1,426.78 and 636.11

Step by Step Solution

1. Step 1: Write the proportion equation
   1,034.43 : 1,426.78 = 636.11 : x
2. Step 2: Convert to fraction form
   1,034.43/1,426.78 = 636.11/x
3. Step 3: Cross multiply
   1,034.43x = 1,426.78 × 636.11
4. Step 4: Simplify right side
   1,034.43x = 907,589.03
5. Step 5: Solve for x
   x = 907,589.03/1,034.43
6. Step 6: Final answer
   x = 877.38