Finding the Fourth Proportional to 1,530, 2,111.31 and 970.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,530 : 2,111.31 = 970.29 : x
2. Step 2: Convert to fraction form
   1,530/2,111.31 = 970.29/x
3. Step 3: Cross multiply
   1,530x = 2,111.31 × 970.29
4. Step 4: Simplify right side
   1,530x = 2,048,582.98
5. Step 5: Solve for x
   x = 2,048,582.98/1,530
6. Step 6: Final answer
   x = 1,338.94