Finding the Fourth Proportional to 1,101.57, 1,651.10 and 451.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,101.57 : 1,651.10 = 451.50 : x
2. Step 2: Convert to fraction form
   1,101.57/1,651.10 = 451.50/x
3. Step 3: Cross multiply
   1,101.57x = 1,651.10 × 451.50
4. Step 4: Simplify right side
   1,101.57x = 745,469.39
5. Step 5: Solve for x
   x = 745,469.39/1,101.57
6. Step 6: Final answer
   x = 676.73