Finding the Fourth Proportional to 2,174.54, 3,259.76 and 712.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,174.54 : 3,259.76 = 712.89 : x
2. Step 2: Convert to fraction form
   2,174.54/3,259.76 = 712.89/x
3. Step 3: Cross multiply
   2,174.54x = 3,259.76 × 712.89
4. Step 4: Simplify right side
   2,174.54x = 2,323,846.74
5. Step 5: Solve for x
   x = 2,323,846.74/2,174.54
6. Step 6: Final answer
   x = 1,068.66