Finding the Fourth Proportional to 1,761.32, 2,642.72 and 786.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,761.32 : 2,642.72 = 786.75 : x
2. Step 2: Convert to fraction form
   1,761.32/2,642.72 = 786.75/x
3. Step 3: Cross multiply
   1,761.32x = 2,642.72 × 786.75
4. Step 4: Simplify right side
   1,761.32x = 2,079,156.03
5. Step 5: Solve for x
   x = 2,079,156.03/1,761.32
6. Step 6: Final answer
   x = 1,180.46