Finding the Fourth Proportional to 1,083.45, 1,495.04 and 641.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,083.45 : 1,495.04 = 641.37 : x
2. Step 2: Convert to fraction form
   1,083.45/1,495.04 = 641.37/x
3. Step 3: Cross multiply
   1,083.45x = 1,495.04 × 641.37
4. Step 4: Simplify right side
   1,083.45x = 958,870.60
5. Step 5: Solve for x
   x = 958,870.60/1,083.45
6. Step 6: Final answer
   x = 885.02