Finding the Fourth Proportional to 1,093.98, 1,641.83 and 445.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,093.98 : 1,641.83 = 445.17 : x
2. Step 2: Convert to fraction form
   1,093.98/1,641.83 = 445.17/x
3. Step 3: Cross multiply
   1,093.98x = 1,641.83 × 445.17
4. Step 4: Simplify right side
   1,093.98x = 730,893.46
5. Step 5: Solve for x
   x = 730,893.46/1,093.98
6. Step 6: Final answer
   x = 668.10