Finding the Fourth Proportional to 2,391.47, 3,586.39 and 910.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,391.47 : 3,586.39 = 910.34 : x
2. Step 2: Convert to fraction form
   2,391.47/3,586.39 = 910.34/x
3. Step 3: Cross multiply
   2,391.47x = 3,586.39 × 910.34
4. Step 4: Simplify right side
   2,391.47x = 3,264,834.27
5. Step 5: Solve for x
   x = 3,264,834.27/2,391.47
6. Step 6: Final answer
   x = 1,365.20