Finding the Fourth Proportional to 1,147.59, 1,579.59 and 959.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,147.59 : 1,579.59 = 959.01 : x
2. Step 2: Convert to fraction form
   1,147.59/1,579.59 = 959.01/x
3. Step 3: Cross multiply
   1,147.59x = 1,579.59 × 959.01
4. Step 4: Simplify right side
   1,147.59x = 1,514,842.61
5. Step 5: Solve for x
   x = 1,514,842.61/1,147.59
6. Step 6: Final answer
   x = 1,320.02