Finding the Fourth Proportional to 1,084.38, 1,622.79 and 887.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,084.38 : 1,622.79 = 887.10 : x
2. Step 2: Convert to fraction form
   1,084.38/1,622.79 = 887.10/x
3. Step 3: Cross multiply
   1,084.38x = 1,622.79 × 887.10
4. Step 4: Simplify right side
   1,084.38x = 1,439,577.01
5. Step 5: Solve for x
   x = 1,439,577.01/1,084.38
6. Step 6: Final answer
   x = 1,327.56