Finding the Fourth Proportional to 1,977.15, 2,964.82 and 1,155.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,977.15 : 2,964.82 = 1,155.68 : x
2. Step 2: Convert to fraction form
   1,977.15/2,964.82 = 1,155.68/x
3. Step 3: Cross multiply
   1,977.15x = 2,964.82 × 1,155.68
4. Step 4: Simplify right side
   1,977.15x = 3,426,383.18
5. Step 5: Solve for x
   x = 3,426,383.18/1,977.15
6. Step 6: Final answer
   x = 1,732.99