Finding the Fourth Proportional to 1,100.73, 1,651.39 and 398.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.73 : 1,651.39 = 398.01 : x
2. Step 2: Convert to fraction form
   1,100.73/1,651.39 = 398.01/x
3. Step 3: Cross multiply
   1,100.73x = 1,651.39 × 398.01
4. Step 4: Simplify right side
   1,100.73x = 657,269.73
5. Step 5: Solve for x
   x = 657,269.73/1,100.73
6. Step 6: Final answer
   x = 597.12