Finding the Fourth Proportional to 1,607.34, 2,218.10 and 908.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,607.34 : 2,218.10 = 908.71 : x
2. Step 2: Convert to fraction form
   1,607.34/2,218.10 = 908.71/x
3. Step 3: Cross multiply
   1,607.34x = 2,218.10 × 908.71
4. Step 4: Simplify right side
   1,607.34x = 2,015,609.65
5. Step 5: Solve for x
   x = 2,015,609.65/1,607.34
6. Step 6: Final answer
   x = 1,254.00