Finding the Fourth Proportional to 1,065.02, 1,469.73 and 623.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,065.02 : 1,469.73 = 623.01 : x
2. Step 2: Convert to fraction form
   1,065.02/1,469.73 = 623.01/x
3. Step 3: Cross multiply
   1,065.02x = 1,469.73 × 623.01
4. Step 4: Simplify right side
   1,065.02x = 915,658.29
5. Step 5: Solve for x
   x = 915,658.29/1,065.02
6. Step 6: Final answer
   x = 859.75