Finding the Fourth Proportional to 2,146.79, 2,961.70 and 1,306.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,146.79 : 2,961.70 = 1,306.82 : x
2. Step 2: Convert to fraction form
   2,146.79/2,961.70 = 1,306.82/x
3. Step 3: Cross multiply
   2,146.79x = 2,961.70 × 1,306.82
4. Step 4: Simplify right side
   2,146.79x = 3,870,412.93
5. Step 5: Solve for x
   x = 3,870,412.93/2,146.79
6. Step 6: Final answer
   x = 1,802.88