Finding the Fourth Proportional to 3,071.94, 4,608.72 and 1,125.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,071.94 : 4,608.72 = 1,125.78 : x
2. Step 2: Convert to fraction form
   3,071.94/4,608.72 = 1,125.78/x
3. Step 3: Cross multiply
   3,071.94x = 4,608.72 × 1,125.78
4. Step 4: Simplify right side
   3,071.94x = 5,188,404.80
5. Step 5: Solve for x
   x = 5,188,404.80/3,071.94
6. Step 6: Final answer
   x = 1,688.97