Finding the Fourth Proportional to 2,600.12, 3,900.72 and 844.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,600.12 : 3,900.72 = 844.98 : x
2. Step 2: Convert to fraction form
   2,600.12/3,900.72 = 844.98/x
3. Step 3: Cross multiply
   2,600.12x = 3,900.72 × 844.98
4. Step 4: Simplify right side
   2,600.12x = 3,296,030.39
5. Step 5: Solve for x
   x = 3,296,030.39/2,600.12
6. Step 6: Final answer
   x = 1,267.65