Finding the Fourth Proportional to 1,010.12, 1,513.82 and 663.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,010.12 : 1,513.82 = 663.30 : x
2. Step 2: Convert to fraction form
   1,010.12/1,513.82 = 663.30/x
3. Step 3: Cross multiply
   1,010.12x = 1,513.82 × 663.30
4. Step 4: Simplify right side
   1,010.12x = 1,004,116.81
5. Step 5: Solve for x
   x = 1,004,116.81/1,010.12
6. Step 6: Final answer
   x = 994.06