Finding the Fourth Proportional to 3,474.53, 5,211.60 and 877.49

Step by Step Solution

1. Step 1: Write the proportion equation
   3,474.53 : 5,211.60 = 877.49 : x
2. Step 2: Convert to fraction form
   3,474.53/5,211.60 = 877.49/x
3. Step 3: Cross multiply
   3,474.53x = 5,211.60 × 877.49
4. Step 4: Simplify right side
   3,474.53x = 4,573,100.83
5. Step 5: Solve for x
   x = 4,573,100.83/3,474.53
6. Step 6: Final answer
   x = 1,316.18