Finding the Fourth Proportional to 1,615.82, 2,424.42 and 691.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,615.82 : 2,424.42 = 691.58 : x
2. Step 2: Convert to fraction form
   1,615.82/2,424.42 = 691.58/x
3. Step 3: Cross multiply
   1,615.82x = 2,424.42 × 691.58
4. Step 4: Simplify right side
   1,615.82x = 1,676,680.38
5. Step 5: Solve for x
   x = 1,676,680.38/1,615.82
6. Step 6: Final answer
   x = 1,037.67