Finding the Fourth Proportional to 1,098.72, 1,647.15 and 481.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,098.72 : 1,647.15 = 481.96 : x
2. Step 2: Convert to fraction form
   1,098.72/1,647.15 = 481.96/x
3. Step 3: Cross multiply
   1,098.72x = 1,647.15 × 481.96
4. Step 4: Simplify right side
   1,098.72x = 793,849.77
5. Step 5: Solve for x
   x = 793,849.77/1,098.72
6. Step 6: Final answer
   x = 722.52