Finding the Fourth Proportional to 1,806.72, 2,707.86 and 880.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,806.72 : 2,707.86 = 880.89 : x
2. Step 2: Convert to fraction form
   1,806.72/2,707.86 = 880.89/x
3. Step 3: Cross multiply
   1,806.72x = 2,707.86 × 880.89
4. Step 4: Simplify right side
   1,806.72x = 2,385,326.80
5. Step 5: Solve for x
   x = 2,385,326.80/1,806.72
6. Step 6: Final answer
   x = 1,320.25