Finding the Fourth Proportional to 2,070.21, 2,856.94 and 1,126.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,070.21 : 2,856.94 = 1,126.05 : x
2. Step 2: Convert to fraction form
   2,070.21/2,856.94 = 1,126.05/x
3. Step 3: Cross multiply
   2,070.21x = 2,856.94 × 1,126.05
4. Step 4: Simplify right side
   2,070.21x = 3,217,063.73
5. Step 5: Solve for x
   x = 3,217,063.73/2,070.21
6. Step 6: Final answer
   x = 1,553.98