Finding the Fourth Proportional to 1,659.42, 2,290.08 and 1,030.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,659.42 : 2,290.08 = 1,030.15 : x
2. Step 2: Convert to fraction form
   1,659.42/2,290.08 = 1,030.15/x
3. Step 3: Cross multiply
   1,659.42x = 2,290.08 × 1,030.15
4. Step 4: Simplify right side
   1,659.42x = 2,359,120.76
5. Step 5: Solve for x
   x = 2,359,120.76/1,659.42
6. Step 6: Final answer
   x = 1,421.65