Finding the Fourth Proportional to 2,070.20, 2,857.55 and 1,326.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,070.20 : 2,857.55 = 1,326.17 : x
2. Step 2: Convert to fraction form
   2,070.20/2,857.55 = 1,326.17/x
3. Step 3: Cross multiply
   2,070.20x = 2,857.55 × 1,326.17
4. Step 4: Simplify right side
   2,070.20x = 3,789,597.60
5. Step 5: Solve for x
   x = 3,789,597.60/2,070.20
6. Step 6: Final answer
   x = 1,830.54