Finding the Fourth Proportional to 1,621.30, 2,429.92 and 695.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,621.30 : 2,429.92 = 695.79 : x
2. Step 2: Convert to fraction form
   1,621.30/2,429.92 = 695.79/x
3. Step 3: Cross multiply
   1,621.30x = 2,429.92 × 695.79
4. Step 4: Simplify right side
   1,621.30x = 1,690,701.89
5. Step 5: Solve for x
   x = 1,690,701.89/1,621.30
6. Step 6: Final answer
   x = 1,042.81