Finding the Fourth Proportional to 1,621.27, 2,236.57 and 1,061.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,621.27 : 2,236.57 = 1,061.49 : x
2. Step 2: Convert to fraction form
   1,621.27/2,236.57 = 1,061.49/x
3. Step 3: Cross multiply
   1,621.27x = 2,236.57 × 1,061.49
4. Step 4: Simplify right side
   1,621.27x = 2,374,096.69
5. Step 5: Solve for x
   x = 2,374,096.69/1,621.27
6. Step 6: Final answer
   x = 1,464.34