Finding the Fourth Proportional to 1,004.79, 1,386.47 and 626.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,004.79 : 1,386.47 = 626.52 : x
2. Step 2: Convert to fraction form
   1,004.79/1,386.47 = 626.52/x
3. Step 3: Cross multiply
   1,004.79x = 1,386.47 × 626.52
4. Step 4: Simplify right side
   1,004.79x = 868,648.05
5. Step 5: Solve for x
   x = 868,648.05/1,004.79
6. Step 6: Final answer
   x = 864.51