Finding the Fourth Proportional to 1,904.39, 2,628.20 and 1,065.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,904.39 : 2,628.20 = 1,065.18 : x
2. Step 2: Convert to fraction form
   1,904.39/2,628.20 = 1,065.18/x
3. Step 3: Cross multiply
   1,904.39x = 2,628.20 × 1,065.18
4. Step 4: Simplify right side
   1,904.39x = 2,799,494.89
5. Step 5: Solve for x
   x = 2,799,494.89/1,904.39
6. Step 6: Final answer
   x = 1,470.02