Finding the Fourth Proportional to 1,530.14, 2,111.94 and 971.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,530.14 : 2,111.94 = 971.38 : x
2. Step 2: Convert to fraction form
   1,530.14/2,111.94 = 971.38/x
3. Step 3: Cross multiply
   1,530.14x = 2,111.94 × 971.38
4. Step 4: Simplify right side
   1,530.14x = 2,051,496.28
5. Step 5: Solve for x
   x = 2,051,496.28/1,530.14
6. Step 6: Final answer
   x = 1,340.72