Finding the Fourth Proportional to 2,155.68, 2,977.56 and 1,659.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,155.68 : 2,977.56 = 1,659.96 : x
2. Step 2: Convert to fraction form
   2,155.68/2,977.56 = 1,659.96/x
3. Step 3: Cross multiply
   2,155.68x = 2,977.56 × 1,659.96
4. Step 4: Simplify right side
   2,155.68x = 4,942,630.50
5. Step 5: Solve for x
   x = 4,942,630.50/2,155.68
6. Step 6: Final answer
   x = 2,292.84