Finding the Fourth Proportional to 2,573.06, 3,858.72 and 841.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,573.06 : 3,858.72 = 841.28 : x
2. Step 2: Convert to fraction form
   2,573.06/3,858.72 = 841.28/x
3. Step 3: Cross multiply
   2,573.06x = 3,858.72 × 841.28
4. Step 4: Simplify right side
   2,573.06x = 3,246,263.96
5. Step 5: Solve for x
   x = 3,246,263.96/2,573.06
6. Step 6: Final answer
   x = 1,261.64