Finding the Fourth Proportional to 1,607.03, 2,217.55 and 898.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,607.03 : 2,217.55 = 898.83 : x
2. Step 2: Convert to fraction form
   1,607.03/2,217.55 = 898.83/x
3. Step 3: Cross multiply
   1,607.03x = 2,217.55 × 898.83
4. Step 4: Simplify right side
   1,607.03x = 1,993,206.10
5. Step 5: Solve for x
   x = 1,993,206.10/1,607.03
6. Step 6: Final answer
   x = 1,240.31