Finding the Fourth Proportional to 1,629.51, 2,248.55 and 911.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,629.51 : 2,248.55 = 911.55 : x
2. Step 2: Convert to fraction form
   1,629.51/2,248.55 = 911.55/x
3. Step 3: Cross multiply
   1,629.51x = 2,248.55 × 911.55
4. Step 4: Simplify right side
   1,629.51x = 2,049,665.75
5. Step 5: Solve for x
   x = 2,049,665.75/1,629.51
6. Step 6: Final answer
   x = 1,257.84