Finding the Fourth Proportional to 1,621.72, 2,238.60 and 1,032.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,621.72 : 2,238.60 = 1,032.76 : x
2. Step 2: Convert to fraction form
   1,621.72/2,238.60 = 1,032.76/x
3. Step 3: Cross multiply
   1,621.72x = 2,238.60 × 1,032.76
4. Step 4: Simplify right side
   1,621.72x = 2,311,936.54
5. Step 5: Solve for x
   x = 2,311,936.54/1,621.72
6. Step 6: Final answer
   x = 1,425.61