Finding the Fourth Proportional to 1,065.25, 1,469.82 and 623.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,065.25 : 1,469.82 = 623.07 : x
2. Step 2: Convert to fraction form
   1,065.25/1,469.82 = 623.07/x
3. Step 3: Cross multiply
   1,065.25x = 1,469.82 × 623.07
4. Step 4: Simplify right side
   1,065.25x = 915,800.75
5. Step 5: Solve for x
   x = 915,800.75/1,065.25
6. Step 6: Final answer
   x = 859.71