Finding the Fourth Proportional to 1,980.29, 2,971.46 and 1,436.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,980.29 : 2,971.46 = 1,436.96 : x
2. Step 2: Convert to fraction form
   1,980.29/2,971.46 = 1,436.96/x
3. Step 3: Cross multiply
   1,980.29x = 2,971.46 × 1,436.96
4. Step 4: Simplify right side
   1,980.29x = 4,269,869.16
5. Step 5: Solve for x
   x = 4,269,869.16/1,980.29
6. Step 6: Final answer
   x = 2,156.18