Finding the Fourth Proportional to 1,016.31, 1,402.68 and 970.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016.31 : 1,402.68 = 970.14 : x
2. Step 2: Convert to fraction form
   1,016.31/1,402.68 = 970.14/x
3. Step 3: Cross multiply
   1,016.31x = 1,402.68 × 970.14
4. Step 4: Simplify right side
   1,016.31x = 1,360,795.98
5. Step 5: Solve for x
   x = 1,360,795.98/1,016.31
6. Step 6: Final answer
   x = 1,338.96