Finding the Fourth Proportional to 1,008.02, 1,391.76 and 659.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,008.02 : 1,391.76 = 659.30 : x
2. Step 2: Convert to fraction form
   1,008.02/1,391.76 = 659.30/x
3. Step 3: Cross multiply
   1,008.02x = 1,391.76 × 659.30
4. Step 4: Simplify right side
   1,008.02x = 917,587.37
5. Step 5: Solve for x
   x = 917,587.37/1,008.02
6. Step 6: Final answer
   x = 910.29