Finding the Fourth Proportional to 1,607.10, 2,217.72 and 908.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,607.10 : 2,217.72 = 908.46 : x
2. Step 2: Convert to fraction form
   1,607.10/2,217.72 = 908.46/x
3. Step 3: Cross multiply
   1,607.10x = 2,217.72 × 908.46
4. Step 4: Simplify right side
   1,607.10x = 2,014,709.91
5. Step 5: Solve for x
   x = 2,014,709.91/1,607.10
6. Step 6: Final answer
   x = 1,253.63