Finding the Fourth Proportional to 2,586.72, 3,881.60 and 943.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,586.72 : 3,881.60 = 943.23 : x
2. Step 2: Convert to fraction form
   2,586.72/3,881.60 = 943.23/x
3. Step 3: Cross multiply
   2,586.72x = 3,881.60 × 943.23
4. Step 4: Simplify right side
   2,586.72x = 3,661,241.57
5. Step 5: Solve for x
   x = 3,661,241.57/2,586.72
6. Step 6: Final answer
   x = 1,415.40