Finding the Fourth Proportional to 2,095.83, 3,142.92 and 689.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,095.83 : 3,142.92 = 689.91 : x
2. Step 2: Convert to fraction form
   2,095.83/3,142.92 = 689.91/x
3. Step 3: Cross multiply
   2,095.83x = 3,142.92 × 689.91
4. Step 4: Simplify right side
   2,095.83x = 2,168,331.94
5. Step 5: Solve for x
   x = 2,168,331.94/2,095.83
6. Step 6: Final answer
   x = 1,034.59