Finding the Fourth Proportional to 1,926.38, 2,891.30 and 1,105.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,926.38 : 2,891.30 = 1,105.25 : x
2. Step 2: Convert to fraction form
   1,926.38/2,891.30 = 1,105.25/x
3. Step 3: Cross multiply
   1,926.38x = 2,891.30 × 1,105.25
4. Step 4: Simplify right side
   1,926.38x = 3,195,589.34
5. Step 5: Solve for x
   x = 3,195,589.34/1,926.38
6. Step 6: Final answer
   x = 1,658.86