Finding the Fourth Proportional to 1,375.35, 2,062.73 and 486.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,375.35 : 2,062.73 = 486.00 : x
2. Step 2: Convert to fraction form
   1,375.35/2,062.73 = 486.00/x
3. Step 3: Cross multiply
   1,375.35x = 2,062.73 × 486.00
4. Step 4: Simplify right side
   1,375.35x = 1,002,476.47
5. Step 5: Solve for x
   x = 1,002,476.47/1,375.35
6. Step 6: Final answer
   x = 728.89