Finding the Fourth Proportional to 1,604.72, 2,214.88 and 906.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,604.72 : 2,214.88 = 906.32 : x
2. Step 2: Convert to fraction form
   1,604.72/2,214.88 = 906.32/x
3. Step 3: Cross multiply
   1,604.72x = 2,214.88 × 906.32
4. Step 4: Simplify right side
   1,604.72x = 2,007,390.04
5. Step 5: Solve for x
   x = 2,007,390.04/1,604.72
6. Step 6: Final answer
   x = 1,250.93