Finding the Fourth Proportional to 1,910.56, 2,859.60 and 1,180.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,910.56 : 2,859.60 = 1,180.72 : x
2. Step 2: Convert to fraction form
   1,910.56/2,859.60 = 1,180.72/x
3. Step 3: Cross multiply
   1,910.56x = 2,859.60 × 1,180.72
4. Step 4: Simplify right side
   1,910.56x = 3,376,386.91
5. Step 5: Solve for x
   x = 3,376,386.91/1,910.56
6. Step 6: Final answer
   x = 1,767.22