Finding the Fourth Proportional to 1,276.06, 1,761.72 and 903.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,276.06 : 1,761.72 = 903.82 : x
2. Step 2: Convert to fraction form
   1,276.06/1,761.72 = 903.82/x
3. Step 3: Cross multiply
   1,276.06x = 1,761.72 × 903.82
4. Step 4: Simplify right side
   1,276.06x = 1,592,277.77
5. Step 5: Solve for x
   x = 1,592,277.77/1,276.06
6. Step 6: Final answer
   x = 1,247.81