Finding the Fourth Proportional to 1,016.56, 1,393.75 and 1,004.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016.56 : 1,393.75 = 1,004.10 : x
2. Step 2: Convert to fraction form
   1,016.56/1,393.75 = 1,004.10/x
3. Step 3: Cross multiply
   1,016.56x = 1,393.75 × 1,004.10
4. Step 4: Simplify right side
   1,016.56x = 1,399,464.38
5. Step 5: Solve for x
   x = 1,399,464.38/1,016.56
6. Step 6: Final answer
   x = 1,376.67