Finding the Fourth Proportional to 1,976.60, 2,965.41 and 1,155.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,976.60 : 2,965.41 = 1,155.57 : x
2. Step 2: Convert to fraction form
   1,976.60/2,965.41 = 1,155.57/x
3. Step 3: Cross multiply
   1,976.60x = 2,965.41 × 1,155.57
4. Step 4: Simplify right side
   1,976.60x = 3,426,738.83
5. Step 5: Solve for x
   x = 3,426,738.83/1,976.60
6. Step 6: Final answer
   x = 1,733.66