Finding the Fourth Proportional to 1,131.04, 1,560.76 and 633.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.04 : 1,560.76 = 633.56 : x
2. Step 2: Convert to fraction form
   1,131.04/1,560.76 = 633.56/x
3. Step 3: Cross multiply
   1,131.04x = 1,560.76 × 633.56
4. Step 4: Simplify right side
   1,131.04x = 988,837.42
5. Step 5: Solve for x
   x = 988,837.42/1,131.04
6. Step 6: Final answer
   x = 874.27