Finding the Fourth Proportional to 2,079.88, 2,870.12 and 1,293.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,079.88 : 2,870.12 = 1,293.92 : x
2. Step 2: Convert to fraction form
   2,079.88/2,870.12 = 1,293.92/x
3. Step 3: Cross multiply
   2,079.88x = 2,870.12 × 1,293.92
4. Step 4: Simplify right side
   2,079.88x = 3,713,705.67
5. Step 5: Solve for x
   x = 3,713,705.67/2,079.88
6. Step 6: Final answer
   x = 1,785.54