Finding the Fourth Proportional to 1,276.83, 1,762.83 and 981.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,276.83 : 1,762.83 = 981.54 : x
2. Step 2: Convert to fraction form
   1,276.83/1,762.83 = 981.54/x
3. Step 3: Cross multiply
   1,276.83x = 1,762.83 × 981.54
4. Step 4: Simplify right side
   1,276.83x = 1,730,288.16
5. Step 5: Solve for x
   x = 1,730,288.16/1,276.83
6. Step 6: Final answer
   x = 1,355.14