Finding the Fourth Proportional to 1,095.69, 1,641.56 and 684.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,095.69 : 1,641.56 = 684.63 : x
2. Step 2: Convert to fraction form
   1,095.69/1,641.56 = 684.63/x
3. Step 3: Cross multiply
   1,095.69x = 1,641.56 × 684.63
4. Step 4: Simplify right side
   1,095.69x = 1,123,857.80
5. Step 5: Solve for x
   x = 1,123,857.80/1,095.69
6. Step 6: Final answer
   x = 1,025.71