Finding the Fourth Proportional to 2,127.15, 3,194.37 and 1,155.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,127.15 : 3,194.37 = 1,155.15 : x
2. Step 2: Convert to fraction form
   2,127.15/3,194.37 = 1,155.15/x
3. Step 3: Cross multiply
   2,127.15x = 3,194.37 × 1,155.15
4. Step 4: Simplify right side
   2,127.15x = 3,689,976.51
5. Step 5: Solve for x
   x = 3,689,976.51/2,127.15
6. Step 6: Final answer
   x = 1,734.70