Finding the Fourth Proportional to 1,629.52, 2,248.71 and 921.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,629.52 : 2,248.71 = 921.35 : x
2. Step 2: Convert to fraction form
   1,629.52/2,248.71 = 921.35/x
3. Step 3: Cross multiply
   1,629.52x = 2,248.71 × 921.35
4. Step 4: Simplify right side
   1,629.52x = 2,071,854.58
5. Step 5: Solve for x
   x = 2,071,854.58/1,629.52
6. Step 6: Final answer
   x = 1,271.45