Finding the Fourth Proportional to 1,620.40, 2,234.69 and 1,060.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,620.40 : 2,234.69 = 1,060.69 : x
2. Step 2: Convert to fraction form
   1,620.40/2,234.69 = 1,060.69/x
3. Step 3: Cross multiply
   1,620.40x = 2,234.69 × 1,060.69
4. Step 4: Simplify right side
   1,620.40x = 2,370,308.03
5. Step 5: Solve for x
   x = 2,370,308.03/1,620.40
6. Step 6: Final answer
   x = 1,462.79