Finding the Fourth Proportional to 1,131.01, 1,560.78 and 659.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.01 : 1,560.78 = 659.18 : x
2. Step 2: Convert to fraction form
   1,131.01/1,560.78 = 659.18/x
3. Step 3: Cross multiply
   1,131.01x = 1,560.78 × 659.18
4. Step 4: Simplify right side
   1,131.01x = 1,028,827.76
5. Step 5: Solve for x
   x = 1,028,827.76/1,131.01
6. Step 6: Final answer
   x = 909.66