Finding the Fourth Proportional to 1,440.32, 1,986.96 and 842.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,440.32 : 1,986.96 = 842.83 : x
2. Step 2: Convert to fraction form
   1,440.32/1,986.96 = 842.83/x
3. Step 3: Cross multiply
   1,440.32x = 1,986.96 × 842.83
4. Step 4: Simplify right side
   1,440.32x = 1,674,659.56
5. Step 5: Solve for x
   x = 1,674,659.56/1,440.32
6. Step 6: Final answer
   x = 1,162.70