Finding the Fourth Proportional to 1,084.02, 1,495.83 and 641.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,084.02 : 1,495.83 = 641.84 : x
2. Step 2: Convert to fraction form
   1,084.02/1,495.83 = 641.84/x
3. Step 3: Cross multiply
   1,084.02x = 1,495.83 × 641.84
4. Step 4: Simplify right side
   1,084.02x = 960,076.05
5. Step 5: Solve for x
   x = 960,076.05/1,084.02
6. Step 6: Final answer
   x = 885.66