Finding the Fourth Proportional to 1,904.52, 2,628.30 and 1,065.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,904.52 : 2,628.30 = 1,065.20 : x
2. Step 2: Convert to fraction form
   1,904.52/2,628.30 = 1,065.20/x
3. Step 3: Cross multiply
   1,904.52x = 2,628.30 × 1,065.20
4. Step 4: Simplify right side
   1,904.52x = 2,799,665.16
5. Step 5: Solve for x
   x = 2,799,665.16/1,904.52
6. Step 6: Final answer
   x = 1,470.01