Finding the Fourth Proportional to 1,591.27, 2,388.57 and 898.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,591.27 : 2,388.57 = 898.54 : x
2. Step 2: Convert to fraction form
   1,591.27/2,388.57 = 898.54/x
3. Step 3: Cross multiply
   1,591.27x = 2,388.57 × 898.54
4. Step 4: Simplify right side
   1,591.27x = 2,146,225.69
5. Step 5: Solve for x
   x = 2,146,225.69/1,591.27
6. Step 6: Final answer
   x = 1,348.75