Finding the Fourth Proportional to 1,977.86, 2,969.49 and 1,273.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,977.86 : 2,969.49 = 1,273.16 : x
2. Step 2: Convert to fraction form
   1,977.86/2,969.49 = 1,273.16/x
3. Step 3: Cross multiply
   1,977.86x = 2,969.49 × 1,273.16
4. Step 4: Simplify right side
   1,977.86x = 3,780,635.89
5. Step 5: Solve for x
   x = 3,780,635.89/1,977.86
6. Step 6: Final answer
   x = 1,911.48