Finding the Fourth Proportional to 1,276.72, 1,761.51 and 981.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,276.72 : 1,761.51 = 981.46 : x
2. Step 2: Convert to fraction form
   1,276.72/1,761.51 = 981.46/x
3. Step 3: Cross multiply
   1,276.72x = 1,761.51 × 981.46
4. Step 4: Simplify right side
   1,276.72x = 1,728,851.60
5. Step 5: Solve for x
   x = 1,728,851.60/1,276.72
6. Step 6: Final answer
   x = 1,354.14