Finding the Fourth Proportional to 2,320.65, 3,200.72 and 1,435.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,320.65 : 3,200.72 = 1,435.73 : x
2. Step 2: Convert to fraction form
   2,320.65/3,200.72 = 1,435.73/x
3. Step 3: Cross multiply
   2,320.65x = 3,200.72 × 1,435.73
4. Step 4: Simplify right side
   2,320.65x = 4,595,346.54
5. Step 5: Solve for x
   x = 4,595,346.54/2,320.65
6. Step 6: Final answer
   x = 1,980.20