Finding the Fourth Proportional to 1,767.42, 2,439.33 and 981.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,767.42 : 2,439.33 = 981.72 : x
2. Step 2: Convert to fraction form
   1,767.42/2,439.33 = 981.72/x
3. Step 3: Cross multiply
   1,767.42x = 2,439.33 × 981.72
4. Step 4: Simplify right side
   1,767.42x = 2,394,739.05
5. Step 5: Solve for x
   x = 2,394,739.05/1,767.42
6. Step 6: Final answer
   x = 1,354.93