Finding the Fourth Proportional to 1,131.14, 1,560.89 and 633.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.14 : 1,560.89 = 633.69 : x
2. Step 2: Convert to fraction form
   1,131.14/1,560.89 = 633.69/x
3. Step 3: Cross multiply
   1,131.14x = 1,560.89 × 633.69
4. Step 4: Simplify right side
   1,131.14x = 989,117.22
5. Step 5: Solve for x
   x = 989,117.22/1,131.14
6. Step 6: Final answer
   x = 874.45