Finding the Fourth Proportional to 1,604.71, 2,214.48 and 906.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,604.71 : 2,214.48 = 906.10 : x
2. Step 2: Convert to fraction form
   1,604.71/2,214.48 = 906.10/x
3. Step 3: Cross multiply
   1,604.71x = 2,214.48 × 906.10
4. Step 4: Simplify right side
   1,604.71x = 2,006,540.33
5. Step 5: Solve for x
   x = 2,006,540.33/1,604.71
6. Step 6: Final answer
   x = 1,250.41