Finding the Fourth Proportional to 1,669.56, 2,301.59 and 1,170.65

Step by Step Solution

1. Step 1: Write the proportion equation
   1,669.56 : 2,301.59 = 1,170.65 : x
2. Step 2: Convert to fraction form
   1,669.56/2,301.59 = 1,170.65/x
3. Step 3: Cross multiply
   1,669.56x = 2,301.59 × 1,170.65
4. Step 4: Simplify right side
   1,669.56x = 2,694,361.72
5. Step 5: Solve for x
   x = 2,694,361.72/1,669.56
6. Step 6: Final answer
   x = 1,613.81