Finding the Fourth Proportional to 1,904.72, 2,628.53 and 1,065.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,904.72 : 2,628.53 = 1,065.47 : x
2. Step 2: Convert to fraction form
   1,904.72/2,628.53 = 1,065.47/x
3. Step 3: Cross multiply
   1,904.72x = 2,628.53 × 1,065.47
4. Step 4: Simplify right side
   1,904.72x = 2,800,601.39
5. Step 5: Solve for x
   x = 2,800,601.39/1,904.72
6. Step 6: Final answer
   x = 1,470.35