Finding the Fourth Proportional to 1,470.32, 2,028.72 and 880.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,470.32 : 2,028.72 = 880.76 : x
2. Step 2: Convert to fraction form
   1,470.32/2,028.72 = 880.76/x
3. Step 3: Cross multiply
   1,470.32x = 2,028.72 × 880.76
4. Step 4: Simplify right side
   1,470.32x = 1,786,815.43
5. Step 5: Solve for x
   x = 1,786,815.43/1,470.32
6. Step 6: Final answer
   x = 1,215.26