Finding the Fourth Proportional to 2,359.59, 3,536.65 and 1,320.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,359.59 : 3,536.65 = 1,320.06 : x
2. Step 2: Convert to fraction form
   2,359.59/3,536.65 = 1,320.06/x
3. Step 3: Cross multiply
   2,359.59x = 3,536.65 × 1,320.06
4. Step 4: Simplify right side
   2,359.59x = 4,668,590.20
5. Step 5: Solve for x
   x = 4,668,590.20/2,359.59
6. Step 6: Final answer
   x = 1,978.56