Finding the Fourth Proportional to 1,612.11, 2,223.46 and 1,080.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,612.11 : 2,223.46 = 1,080.82 : x
2. Step 2: Convert to fraction form
   1,612.11/2,223.46 = 1,080.82/x
3. Step 3: Cross multiply
   1,612.11x = 2,223.46 × 1,080.82
4. Step 4: Simplify right side
   1,612.11x = 2,403,151.78
5. Step 5: Solve for x
   x = 2,403,151.78/1,612.11
6. Step 6: Final answer
   x = 1,490.69