Finding the Fourth Proportional to 1,962.71, 2,708.61 and 1,123.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,962.71 : 2,708.61 = 1,123.40 : x
2. Step 2: Convert to fraction form
   1,962.71/2,708.61 = 1,123.40/x
3. Step 3: Cross multiply
   1,962.71x = 2,708.61 × 1,123.40
4. Step 4: Simplify right side
   1,962.71x = 3,042,859.25
5. Step 5: Solve for x
   x = 3,042,859.25/1,962.71
6. Step 6: Final answer
   x = 1,550.33