Finding the Fourth Proportional to 1,268.15, 1,901.86 and 488.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,268.15 : 1,901.86 = 488.10 : x
2. Step 2: Convert to fraction form
   1,268.15/1,901.86 = 488.10/x
3. Step 3: Cross multiply
   1,268.15x = 1,901.86 × 488.10
4. Step 4: Simplify right side
   1,268.15x = 928,285.92
5. Step 5: Solve for x
   x = 928,285.92/1,268.15
6. Step 6: Final answer
   x = 732.00