Finding the Fourth Proportional to 1,607.30, 2,411.34 and 453.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,607.30 : 2,411.34 = 453.05 : x
2. Step 2: Convert to fraction form
   1,607.30/2,411.34 = 453.05/x
3. Step 3: Cross multiply
   1,607.30x = 2,411.34 × 453.05
4. Step 4: Simplify right side
   1,607.30x = 1,092,443.27
5. Step 5: Solve for x
   x = 1,092,443.27/1,607.30
6. Step 6: Final answer
   x = 679.68