Finding the Fourth Proportional to 1,659.56, 2,499.21 and 1,445.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,659.56 : 2,499.21 = 1,445.72 : x
2. Step 2: Convert to fraction form
   1,659.56/2,499.21 = 1,445.72/x
3. Step 3: Cross multiply
   1,659.56x = 2,499.21 × 1,445.72
4. Step 4: Simplify right side
   1,659.56x = 3,613,145.39
5. Step 5: Solve for x
   x = 3,613,145.39/1,659.56
6. Step 6: Final answer
   x = 2,177.18