Finding the Fourth Proportional to 1,818.69, 2,492.31 and 1,643.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,818.69 : 2,492.31 = 1,643.73 : x
2. Step 2: Convert to fraction form
   1,818.69/2,492.31 = 1,643.73/x
3. Step 3: Cross multiply
   1,818.69x = 2,492.31 × 1,643.73
4. Step 4: Simplify right side
   1,818.69x = 4,096,684.72
5. Step 5: Solve for x
   x = 4,096,684.72/1,818.69
6. Step 6: Final answer
   x = 2,252.55