Finding the Fourth Proportional to 1,980.89, 2,974.37 and 1,612.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,980.89 : 2,974.37 = 1,612.16 : x
2. Step 2: Convert to fraction form
   1,980.89/2,974.37 = 1,612.16/x
3. Step 3: Cross multiply
   1,980.89x = 2,974.37 × 1,612.16
4. Step 4: Simplify right side
   1,980.89x = 4,795,137.41
5. Step 5: Solve for x
   x = 4,795,137.41/1,980.89
6. Step 6: Final answer
   x = 2,420.70