Finding the Fourth Proportional to 2,659.50, 3,669.30 and 1,665.77

Step by Step Solution

1. Step 1: Write the proportion equation
   2,659.50 : 3,669.30 = 1,665.77 : x
2. Step 2: Convert to fraction form
   2,659.50/3,669.30 = 1,665.77/x
3. Step 3: Cross multiply
   2,659.50x = 3,669.30 × 1,665.77
4. Step 4: Simplify right side
   2,659.50x = 6,112,191.51
5. Step 5: Solve for x
   x = 6,112,191.51/2,659.50
6. Step 6: Final answer
   x = 2,298.25