Finding the Fourth Proportional to 1,144.50, 1,580.45 and 1,083.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,144.50 : 1,580.45 = 1,083.12 : x
2. Step 2: Convert to fraction form
   1,144.50/1,580.45 = 1,083.12/x
3. Step 3: Cross multiply
   1,144.50x = 1,580.45 × 1,083.12
4. Step 4: Simplify right side
   1,144.50x = 1,711,817.00
5. Step 5: Solve for x
   x = 1,711,817.00/1,144.50
6. Step 6: Final answer
   x = 1,495.69