Finding the Fourth Proportional to 1,809.78, 2,497.83 and 1,146.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,809.78 : 2,497.83 = 1,146.18 : x
2. Step 2: Convert to fraction form
   1,809.78/2,497.83 = 1,146.18/x
3. Step 3: Cross multiply
   1,809.78x = 2,497.83 × 1,146.18
4. Step 4: Simplify right side
   1,809.78x = 2,862,962.79
5. Step 5: Solve for x
   x = 2,862,962.79/1,809.78
6. Step 6: Final answer
   x = 1,581.94