Finding the Fourth Proportional to 1,367.58, 2,051.51 and 443.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,367.58 : 2,051.51 = 443.10 : x
2. Step 2: Convert to fraction form
   1,367.58/2,051.51 = 443.10/x
3. Step 3: Cross multiply
   1,367.58x = 2,051.51 × 443.10
4. Step 4: Simplify right side
   1,367.58x = 909,011.61
5. Step 5: Solve for x
   x = 909,011.61/1,367.58
6. Step 6: Final answer
   x = 664.69