Finding the Fourth Proportional to 1,132.78, 1,563.01 and 635.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,132.78 : 1,563.01 = 635.42 : x
2. Step 2: Convert to fraction form
   1,132.78/1,563.01 = 635.42/x
3. Step 3: Cross multiply
   1,132.78x = 1,563.01 × 635.42
4. Step 4: Simplify right side
   1,132.78x = 993,167.81
5. Step 5: Solve for x
   x = 993,167.81/1,132.78
6. Step 6: Final answer
   x = 876.75