Finding the Fourth Proportional to 1,767.09, 2,438.55 and 981.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,767.09 : 2,438.55 = 981.15 : x
2. Step 2: Convert to fraction form
   1,767.09/2,438.55 = 981.15/x
3. Step 3: Cross multiply
   1,767.09x = 2,438.55 × 981.15
4. Step 4: Simplify right side
   1,767.09x = 2,392,583.33
5. Step 5: Solve for x
   x = 2,392,583.33/1,767.09
6. Step 6: Final answer
   x = 1,353.97