Finding the Fourth Proportional to 1,945.52, 2,665.52 and 1,921.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,945.52 : 2,665.52 = 1,921.24 : x
2. Step 2: Convert to fraction form
   1,945.52/2,665.52 = 1,921.24/x
3. Step 3: Cross multiply
   1,945.52x = 2,665.52 × 1,921.24
4. Step 4: Simplify right side
   1,945.52x = 5,121,103.64
5. Step 5: Solve for x
   x = 5,121,103.64/1,945.52
6. Step 6: Final answer
   x = 2,632.25