Finding the Fourth Proportional to 1,767.55, 2,439.21 and 981.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,767.55 : 2,439.21 = 981.59 : x
2. Step 2: Convert to fraction form
   1,767.55/2,439.21 = 981.59/x
3. Step 3: Cross multiply
   1,767.55x = 2,439.21 × 981.59
4. Step 4: Simplify right side
   1,767.55x = 2,394,304.14
5. Step 5: Solve for x
   x = 2,394,304.14/1,767.55
6. Step 6: Final answer
   x = 1,354.59