Finding the Fourth Proportional to 2,452.49, 3,677.59 and 891.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,452.49 : 3,677.59 = 891.40 : x
2. Step 2: Convert to fraction form
   2,452.49/3,677.59 = 891.40/x
3. Step 3: Cross multiply
   2,452.49x = 3,677.59 × 891.40
4. Step 4: Simplify right side
   2,452.49x = 3,278,189.69
5. Step 5: Solve for x
   x = 3,278,189.69/2,452.49
6. Step 6: Final answer
   x = 1,336.68