Finding the Fourth Proportional to 1,629.72, 2,248.63 and 921.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,629.72 : 2,248.63 = 921.52 : x
2. Step 2: Convert to fraction form
   1,629.72/2,248.63 = 921.52/x
3. Step 3: Cross multiply
   1,629.72x = 2,248.63 × 921.52
4. Step 4: Simplify right side
   1,629.72x = 2,072,158.02
5. Step 5: Solve for x
   x = 2,072,158.02/1,629.72
6. Step 6: Final answer
   x = 1,271.48