Finding the Fourth Proportional to 2,903.80, 4,356.96 and 1,260.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,903.80 : 4,356.96 = 1,260.76 : x
2. Step 2: Convert to fraction form
   2,903.80/4,356.96 = 1,260.76/x
3. Step 3: Cross multiply
   2,903.80x = 4,356.96 × 1,260.76
4. Step 4: Simplify right side
   2,903.80x = 5,493,080.89
5. Step 5: Solve for x
   x = 5,493,080.89/2,903.80
6. Step 6: Final answer
   x = 1,891.69