Finding the Fourth Proportional to 2,141.52, 3,210.10 and 841.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,141.52 : 3,210.10 = 841.20 : x
2. Step 2: Convert to fraction form
   2,141.52/3,210.10 = 841.20/x
3. Step 3: Cross multiply
   2,141.52x = 3,210.10 × 841.20
4. Step 4: Simplify right side
   2,141.52x = 2,700,336.12
5. Step 5: Solve for x
   x = 2,700,336.12/2,141.52
6. Step 6: Final answer
   x = 1,260.94