Finding the Fourth Proportional to 1,604.52, 2,214.27 and 905.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,604.52 : 2,214.27 = 905.91 : x
2. Step 2: Convert to fraction form
   1,604.52/2,214.27 = 905.91/x
3. Step 3: Cross multiply
   1,604.52x = 2,214.27 × 905.91
4. Step 4: Simplify right side
   1,604.52x = 2,005,929.34
5. Step 5: Solve for x
   x = 2,005,929.34/1,604.52
6. Step 6: Final answer
   x = 1,250.17