Finding the Fourth Proportional to 1,732.16, 2,389.76 and 1,143.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,732.16 : 2,389.76 = 1,143.12 : x
2. Step 2: Convert to fraction form
   1,732.16/2,389.76 = 1,143.12/x
3. Step 3: Cross multiply
   1,732.16x = 2,389.76 × 1,143.12
4. Step 4: Simplify right side
   1,732.16x = 2,731,782.45
5. Step 5: Solve for x
   x = 2,731,782.45/1,732.16
6. Step 6: Final answer
   x = 1,577.10