Finding the Fourth Proportional to 2,137.17, 3,205.89 and 904.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,137.17 : 3,205.89 = 904.42 : x
2. Step 2: Convert to fraction form
   2,137.17/3,205.89 = 904.42/x
3. Step 3: Cross multiply
   2,137.17x = 3,205.89 × 904.42
4. Step 4: Simplify right side
   2,137.17x = 2,899,463.02
5. Step 5: Solve for x
   x = 2,899,463.02/2,137.17
6. Step 6: Final answer
   x = 1,356.68