Finding the Fourth Proportional to 1,921.08, 2,651.22 and 1,659.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,921.08 : 2,651.22 = 1,659.72 : x
2. Step 2: Convert to fraction form
   1,921.08/2,651.22 = 1,659.72/x
3. Step 3: Cross multiply
   1,921.08x = 2,651.22 × 1,659.72
4. Step 4: Simplify right side
   1,921.08x = 4,400,282.86
5. Step 5: Solve for x
   x = 4,400,282.86/1,921.08
6. Step 6: Final answer
   x = 2,290.53