Finding the Fourth Proportional to 1,631.36, 2,250.96 and 1,010.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,631.36 : 2,250.96 = 1,010.72 : x
2. Step 2: Convert to fraction form
   1,631.36/2,250.96 = 1,010.72/x
3. Step 3: Cross multiply
   1,631.36x = 2,250.96 × 1,010.72
4. Step 4: Simplify right side
   1,631.36x = 2,275,090.29
5. Step 5: Solve for x
   x = 2,275,090.29/1,631.36
6. Step 6: Final answer
   x = 1,394.60