Finding the Fourth Proportional to 2,685.89, 4,030.86 and 1,226.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,685.89 : 4,030.86 = 1,226.07 : x
2. Step 2: Convert to fraction form
   2,685.89/4,030.86 = 1,226.07/x
3. Step 3: Cross multiply
   2,685.89x = 4,030.86 × 1,226.07
4. Step 4: Simplify right side
   2,685.89x = 4,942,121.12
5. Step 5: Solve for x
   x = 4,942,121.12/2,685.89
6. Step 6: Final answer
   x = 1,840.03