Finding the Fourth Proportional to 1,131.37, 1,561.24 and 634.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.37 : 1,561.24 = 634.03 : x
2. Step 2: Convert to fraction form
   1,131.37/1,561.24 = 634.03/x
3. Step 3: Cross multiply
   1,131.37x = 1,561.24 × 634.03
4. Step 4: Simplify right side
   1,131.37x = 989,873.00
5. Step 5: Solve for x
   x = 989,873.00/1,131.37
6. Step 6: Final answer
   x = 874.93