Finding the Fourth Proportional to 1,065.08, 1,470.30 and 622.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,065.08 : 1,470.30 = 622.82 : x
2. Step 2: Convert to fraction form
   1,065.08/1,470.30 = 622.82/x
3. Step 3: Cross multiply
   1,065.08x = 1,470.30 × 622.82
4. Step 4: Simplify right side
   1,065.08x = 915,732.25
5. Step 5: Solve for x
   x = 915,732.25/1,065.08
6. Step 6: Final answer
   x = 859.78