Finding the Fourth Proportional to 1,530.69, 2,111.67 and 971.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,530.69 : 2,111.67 = 971.34 : x
2. Step 2: Convert to fraction form
   1,530.69/2,111.67 = 971.34/x
3. Step 3: Cross multiply
   1,530.69x = 2,111.67 × 971.34
4. Step 4: Simplify right side
   1,530.69x = 2,051,149.54
5. Step 5: Solve for x
   x = 2,051,149.54/1,530.69
6. Step 6: Final answer
   x = 1,340.02