Finding the Fourth Proportional to 2,111.96, 3,167.96 and 726.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.96 : 3,167.96 = 726.88 : x
2. Step 2: Convert to fraction form
   2,111.96/3,167.96 = 726.88/x
3. Step 3: Cross multiply
   2,111.96x = 3,167.96 × 726.88
4. Step 4: Simplify right side
   2,111.96x = 2,302,726.76
5. Step 5: Solve for x
   x = 2,302,726.76/2,111.96
6. Step 6: Final answer
   x = 1,090.33