Finding the Fourth Proportional to 2,112.66, 3,164.67 and 1,084.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,112.66 : 3,164.67 = 1,084.50 : x
2. Step 2: Convert to fraction form
   2,112.66/3,164.67 = 1,084.50/x
3. Step 3: Cross multiply
   2,112.66x = 3,164.67 × 1,084.50
4. Step 4: Simplify right side
   2,112.66x = 3,432,084.62
5. Step 5: Solve for x
   x = 3,432,084.62/2,112.66
6. Step 6: Final answer
   x = 1,624.53