Finding the Fourth Proportional to 1,971.52, 2,720.94 and 1,143.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,971.52 : 2,720.94 = 1,143.52 : x
2. Step 2: Convert to fraction form
   1,971.52/2,720.94 = 1,143.52/x
3. Step 3: Cross multiply
   1,971.52x = 2,720.94 × 1,143.52
4. Step 4: Simplify right side
   1,971.52x = 3,111,449.31
5. Step 5: Solve for x
   x = 3,111,449.31/1,971.52
6. Step 6: Final answer
   x = 1,578.20