Finding the Fourth Proportional to 2,681.61, 4,022.69 and 926.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,681.61 : 4,022.69 = 926.38 : x
2. Step 2: Convert to fraction form
   2,681.61/4,022.69 = 926.38/x
3. Step 3: Cross multiply
   2,681.61x = 4,022.69 × 926.38
4. Step 4: Simplify right side
   2,681.61x = 3,726,539.96
5. Step 5: Solve for x
   x = 3,726,539.96/2,681.61
6. Step 6: Final answer
   x = 1,389.67