Finding the Fourth Proportional to 1,659.72, 2,290.59 and 1,030.65

Step by Step Solution

1. Step 1: Write the proportion equation
   1,659.72 : 2,290.59 = 1,030.65 : x
2. Step 2: Convert to fraction form
   1,659.72/2,290.59 = 1,030.65/x
3. Step 3: Cross multiply
   1,659.72x = 2,290.59 × 1,030.65
4. Step 4: Simplify right side
   1,659.72x = 2,360,796.58
5. Step 5: Solve for x
   x = 2,360,796.58/1,659.72
6. Step 6: Final answer
   x = 1,422.41