Finding the Fourth Proportional to 1,086.08, 1,496.34 and 898.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.08 : 1,496.34 = 898.56 : x
2. Step 2: Convert to fraction form
   1,086.08/1,496.34 = 898.56/x
3. Step 3: Cross multiply
   1,086.08x = 1,496.34 × 898.56
4. Step 4: Simplify right side
   1,086.08x = 1,344,551.27
5. Step 5: Solve for x
   x = 1,344,551.27/1,086.08
6. Step 6: Final answer
   x = 1,237.99