Finding the Fourth Proportional to 1,580.49, 2,181.69 and 1,084.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,580.49 : 2,181.69 = 1,084.32 : x
2. Step 2: Convert to fraction form
   1,580.49/2,181.69 = 1,084.32/x
3. Step 3: Cross multiply
   1,580.49x = 2,181.69 × 1,084.32
4. Step 4: Simplify right side
   1,580.49x = 2,365,650.10
5. Step 5: Solve for x
   x = 2,365,650.10/1,580.49
6. Step 6: Final answer
   x = 1,496.78