Finding the Fourth Proportional to 1,602.56, 2,404.25 and 448.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,602.56 : 2,404.25 = 448.31 : x
2. Step 2: Convert to fraction form
   1,602.56/2,404.25 = 448.31/x
3. Step 3: Cross multiply
   1,602.56x = 2,404.25 × 448.31
4. Step 4: Simplify right side
   1,602.56x = 1,077,854.77
5. Step 5: Solve for x
   x = 1,077,854.77/1,602.56
6. Step 6: Final answer
   x = 672.58