Finding the Fourth Proportional to 3,411.72, 5,117.51 and 946.55

Step by Step Solution

1. Step 1: Write the proportion equation
   3,411.72 : 5,117.51 = 946.55 : x
2. Step 2: Convert to fraction form
   3,411.72/5,117.51 = 946.55/x
3. Step 3: Cross multiply
   3,411.72x = 5,117.51 × 946.55
4. Step 4: Simplify right side
   3,411.72x = 4,843,994.25
5. Step 5: Solve for x
   x = 4,843,994.25/3,411.72
6. Step 6: Final answer
   x = 1,419.81