Finding the Fourth Proportional to 2,079.41, 3,111.29 and 1,155.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,079.41 : 3,111.29 = 1,155.63 : x
2. Step 2: Convert to fraction form
   2,079.41/3,111.29 = 1,155.63/x
3. Step 3: Cross multiply
   2,079.41x = 3,111.29 × 1,155.63
4. Step 4: Simplify right side
   2,079.41x = 3,595,500.06
5. Step 5: Solve for x
   x = 3,595,500.06/2,079.41
6. Step 6: Final answer
   x = 1,729.10