Finding the Fourth Proportional to 1,065.06, 1,469.91 and 623.13

Step by Step Solution

1. Step 1: Write the proportion equation
   1,065.06 : 1,469.91 = 623.13 : x
2. Step 2: Convert to fraction form
   1,065.06/1,469.91 = 623.13/x
3. Step 3: Cross multiply
   1,065.06x = 1,469.91 × 623.13
4. Step 4: Simplify right side
   1,065.06x = 915,945.02
5. Step 5: Solve for x
   x = 915,945.02/1,065.06
6. Step 6: Final answer
   x = 859.99