Finding the Fourth Proportional to 1,616.21, 2,428.86 and 958.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,616.21 : 2,428.86 = 958.18 : x
2. Step 2: Convert to fraction form
   1,616.21/2,428.86 = 958.18/x
3. Step 3: Cross multiply
   1,616.21x = 2,428.86 × 958.18
4. Step 4: Simplify right side
   1,616.21x = 2,327,290.39
5. Step 5: Solve for x
   x = 2,327,290.39/1,616.21
6. Step 6: Final answer
   x = 1,439.97