Finding the Fourth Proportional to 1,796.94, 2,695.51 and 642.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,796.94 : 2,695.51 = 642.69 : x
2. Step 2: Convert to fraction form
   1,796.94/2,695.51 = 642.69/x
3. Step 3: Cross multiply
   1,796.94x = 2,695.51 × 642.69
4. Step 4: Simplify right side
   1,796.94x = 1,732,377.32
5. Step 5: Solve for x
   x = 1,732,377.32/1,796.94
6. Step 6: Final answer
   x = 964.07