Finding the Fourth Proportional to 1,470.72, 2,028.72 and 1,029.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,470.72 : 2,028.72 = 1,029.69 : x
2. Step 2: Convert to fraction form
   1,470.72/2,028.72 = 1,029.69/x
3. Step 3: Cross multiply
   1,470.72x = 2,028.72 × 1,029.69
4. Step 4: Simplify right side
   1,470.72x = 2,088,952.70
5. Step 5: Solve for x
   x = 2,088,952.70/1,470.72
6. Step 6: Final answer
   x = 1,420.36