Finding the Fourth Proportional to 1,628.88, 2,443.59 and 899.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,628.88 : 2,443.59 = 899.16 : x
2. Step 2: Convert to fraction form
   1,628.88/2,443.59 = 899.16/x
3. Step 3: Cross multiply
   1,628.88x = 2,443.59 × 899.16
4. Step 4: Simplify right side
   1,628.88x = 2,197,178.38
5. Step 5: Solve for x
   x = 2,197,178.38/1,628.88
6. Step 6: Final answer
   x = 1,348.89