Finding the Fourth Proportional to 2,580.84, 3,871.32 and 936.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,580.84 : 3,871.32 = 936.93 : x
2. Step 2: Convert to fraction form
   2,580.84/3,871.32 = 936.93/x
3. Step 3: Cross multiply
   2,580.84x = 3,871.32 × 936.93
4. Step 4: Simplify right side
   2,580.84x = 3,627,155.85
5. Step 5: Solve for x
   x = 3,627,155.85/2,580.84
6. Step 6: Final answer
   x = 1,405.42