Finding the Fourth Proportional to 2,084.46, 3,121.62 and 1,260.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,084.46 : 3,121.62 = 1,260.72 : x
2. Step 2: Convert to fraction form
   2,084.46/3,121.62 = 1,260.72/x
3. Step 3: Cross multiply
   2,084.46x = 3,121.62 × 1,260.72
4. Step 4: Simplify right side
   2,084.46x = 3,935,488.77
5. Step 5: Solve for x
   x = 3,935,488.77/2,084.46
6. Step 6: Final answer
   x = 1,888.01