Finding the Fourth Proportional to 1,146.12, 1,580.22 and 1,084.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,146.12 : 1,580.22 = 1,084.56 : x
2. Step 2: Convert to fraction form
   1,146.12/1,580.22 = 1,084.56/x
3. Step 3: Cross multiply
   1,146.12x = 1,580.22 × 1,084.56
4. Step 4: Simplify right side
   1,146.12x = 1,713,843.40
5. Step 5: Solve for x
   x = 1,713,843.40/1,146.12
6. Step 6: Final answer
   x = 1,495.34