Finding the Fourth Proportional to 1,709.39, 2,563.21 and 1,124.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,709.39 : 2,563.21 = 1,124.72 : x
2. Step 2: Convert to fraction form
   1,709.39/2,563.21 = 1,124.72/x
3. Step 3: Cross multiply
   1,709.39x = 2,563.21 × 1,124.72
4. Step 4: Simplify right side
   1,709.39x = 2,882,897.15
5. Step 5: Solve for x
   x = 2,882,897.15/1,709.39
6. Step 6: Final answer
   x = 1,686.50