Finding the Fourth Proportional to 1,920.88, 2,875.83 and 1,767.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,920.88 : 2,875.83 = 1,767.79 : x
2. Step 2: Convert to fraction form
   1,920.88/2,875.83 = 1,767.79/x
3. Step 3: Cross multiply
   1,920.88x = 2,875.83 × 1,767.79
4. Step 4: Simplify right side
   1,920.88x = 5,083,863.52
5. Step 5: Solve for x
   x = 5,083,863.52/1,920.88
6. Step 6: Final answer
   x = 2,646.63