Finding the Fourth Proportional to 1,470.71, 2,028.89 and 939.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,470.71 : 2,028.89 = 939.32 : x
2. Step 2: Convert to fraction form
   1,470.71/2,028.89 = 939.32/x
3. Step 3: Cross multiply
   1,470.71x = 2,028.89 × 939.32
4. Step 4: Simplify right side
   1,470.71x = 1,905,774.23
5. Step 5: Solve for x
   x = 1,905,774.23/1,470.71
6. Step 6: Final answer
   x = 1,295.82