Finding the Fourth Proportional to 1,710.54, 2,567.94 and 1,123.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,710.54 : 2,567.94 = 1,123.71 : x
2. Step 2: Convert to fraction form
   1,710.54/2,567.94 = 1,123.71/x
3. Step 3: Cross multiply
   1,710.54x = 2,567.94 × 1,123.71
4. Step 4: Simplify right side
   1,710.54x = 2,885,615.64
5. Step 5: Solve for x
   x = 2,885,615.64/1,710.54
6. Step 6: Final answer
   x = 1,686.96