Finding the Fourth Proportional to 1,606.26, 2,216.61 and 907.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,606.26 : 2,216.61 = 907.62 : x
2. Step 2: Convert to fraction form
   1,606.26/2,216.61 = 907.62/x
3. Step 3: Cross multiply
   1,606.26x = 2,216.61 × 907.62
4. Step 4: Simplify right side
   1,606.26x = 2,011,839.57
5. Step 5: Solve for x
   x = 2,011,839.57/1,606.26
6. Step 6: Final answer
   x = 1,252.50