Finding the Fourth Proportional to 2,391.85, 3,585.72 and 910.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,391.85 : 3,585.72 = 910.25 : x
2. Step 2: Convert to fraction form
   2,391.85/3,585.72 = 910.25/x
3. Step 3: Cross multiply
   2,391.85x = 3,585.72 × 910.25
4. Step 4: Simplify right side
   2,391.85x = 3,263,901.63
5. Step 5: Solve for x
   x = 3,263,901.63/2,391.85
6. Step 6: Final answer
   x = 1,364.59