Finding the Fourth Proportional to 2,039.49, 3,060.18 and 869.85

Step by Step Solution

1. Step 1: Write the proportion equation
   2,039.49 : 3,060.18 = 869.85 : x
2. Step 2: Convert to fraction form
   2,039.49/3,060.18 = 869.85/x
3. Step 3: Cross multiply
   2,039.49x = 3,060.18 × 869.85
4. Step 4: Simplify right side
   2,039.49x = 2,661,897.57
5. Step 5: Solve for x
   x = 2,661,897.57/2,039.49
6. Step 6: Final answer
   x = 1,305.18