Finding the Fourth Proportional to 1,629.32, 2,245.78 and 1,131.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,629.32 : 2,245.78 = 1,131.09 : x
2. Step 2: Convert to fraction form
   1,629.32/2,245.78 = 1,131.09/x
3. Step 3: Cross multiply
   1,629.32x = 2,245.78 × 1,131.09
4. Step 4: Simplify right side
   1,629.32x = 2,540,172.25
5. Step 5: Solve for x
   x = 2,540,172.25/1,629.32
6. Step 6: Final answer
   x = 1,559.04