Finding the Fourth Proportional to 2,546.69, 3,817.58 and 1,391.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,546.69 : 3,817.58 = 1,391.63 : x
2. Step 2: Convert to fraction form
   2,546.69/3,817.58 = 1,391.63/x
3. Step 3: Cross multiply
   2,546.69x = 3,817.58 × 1,391.63
4. Step 4: Simplify right side
   2,546.69x = 5,312,632.81
5. Step 5: Solve for x
   x = 5,312,632.81/2,546.69
6. Step 6: Final answer
   x = 2,086.10