Finding the Fourth Proportional to 1,410.10, 2,112.82 and 485.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,410.10 : 2,112.82 = 485.17 : x
2. Step 2: Convert to fraction form
   1,410.10/2,112.82 = 485.17/x
3. Step 3: Cross multiply
   1,410.10x = 2,112.82 × 485.17
4. Step 4: Simplify right side
   1,410.10x = 1,025,076.88
5. Step 5: Solve for x
   x = 1,025,076.88/1,410.10
6. Step 6: Final answer
   x = 726.95