Finding the Fourth Proportional to 1,074.34, 1,610.56 and 708.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,074.34 : 1,610.56 = 708.36 : x
2. Step 2: Convert to fraction form
   1,074.34/1,610.56 = 708.36/x
3. Step 3: Cross multiply
   1,074.34x = 1,610.56 × 708.36
4. Step 4: Simplify right side
   1,074.34x = 1,140,856.28
5. Step 5: Solve for x
   x = 1,140,856.28/1,074.34
6. Step 6: Final answer
   x = 1,061.91