Finding the Fourth Proportional to 1,767.47, 2,439.15 and 981.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,767.47 : 2,439.15 = 981.50 : x
2. Step 2: Convert to fraction form
   1,767.47/2,439.15 = 981.50/x
3. Step 3: Cross multiply
   1,767.47x = 2,439.15 × 981.50
4. Step 4: Simplify right side
   1,767.47x = 2,394,025.73
5. Step 5: Solve for x
   x = 2,394,025.73/1,767.47
6. Step 6: Final answer
   x = 1,354.49