Finding the Fourth Proportional to 1,976.09, 2,964.48 and 880.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,976.09 : 2,964.48 = 880.43 : x
2. Step 2: Convert to fraction form
   1,976.09/2,964.48 = 880.43/x
3. Step 3: Cross multiply
   1,976.09x = 2,964.48 × 880.43
4. Step 4: Simplify right side
   1,976.09x = 2,610,012.72
5. Step 5: Solve for x
   x = 2,610,012.72/1,976.09
6. Step 6: Final answer
   x = 1,320.80