Finding the Fourth Proportional to 1,957.59, 2,700.89 and 1,161.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,957.59 : 2,700.89 = 1,161.05 : x
2. Step 2: Convert to fraction form
   1,957.59/2,700.89 = 1,161.05/x
3. Step 3: Cross multiply
   1,957.59x = 2,700.89 × 1,161.05
4. Step 4: Simplify right side
   1,957.59x = 3,135,856.36
5. Step 5: Solve for x
   x = 3,135,856.36/1,957.59
6. Step 6: Final answer
   x = 1,601.89