Finding the Fourth Proportional to 2,070.77, 2,856.38 and 1,284.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,070.77 : 2,856.38 = 1,284.82 : x
2. Step 2: Convert to fraction form
   2,070.77/2,856.38 = 1,284.82/x
3. Step 3: Cross multiply
   2,070.77x = 2,856.38 × 1,284.82
4. Step 4: Simplify right side
   2,070.77x = 3,669,934.15
5. Step 5: Solve for x
   x = 3,669,934.15/2,070.77
6. Step 6: Final answer
   x = 1,772.26